Title of Invention

A GRANULE COLOR SORTING APPARATUS EQUIPPED WITH DISPLAY CONTROL DEVICE

Abstract

A granule color sorting apparatus (10) equipped with a display control device, characterized in that: a transferring means (13 (11,12), 14) for transferring granules consecutively; an illuminating means (18a, 18b) for illuminating the transferred granules at a detection position (O); an image pickup means (16a, 17a, 16b, 17b) for picking up images of the illuminated granules at the detection position; a contour processing means (31) for outputting the contour of the granule in the form of contour binary data based on a comparison of an image signal of the image pickup means with a contour threshold; a defective determination means (32, 33) for determining the granule having a part exceeding a threshold that corresponds to a predetermined density as a defective granule and outputting the defective part of the defective granule in the form of defective pixel binary data; a granule display means (40a) for combining the defective pixel binary data output from the defective determination means into the contour binary data output from the contour processing means and displaying the combined data; a defective display means (40b, 40c) for displaying the defective pixel binary data output from the defective determination means; and a threshold adjustment means (41) for altering a threshold while observing the respective display means.

Full Text

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color sorting ap- paratus for granules, and more particularly to a color sorting apparatus equipped with a display control device that is configured to be able to sense images of a granule picked up by a CCD sensor to thereby display the images on an operation panel and perform detection sensibility con- trol for the defective granules while observing the dis- played images. 2. Description of the Related Art When performing the control of the background or sen- sibility in the conventional color sorting apparatus, sen- sor signals were displayed on an oscilloscope or a touch panel to carry out the control while observing the dis- played signals. More particularly, in the conventional sensibility control of thinly-coloration and partly- coloration for the defective granules such as thinly- colored granules and partly-colored granules, the falling level of signals to be regarded as the defective granule has been carried out based on the magnitude of the falling with respect to the background signal level being set to 100% while observing the actual sorting condition. The key map of the conventional sensibility control is shown in Fig. 6. In this figure, it is shown that a granule whose sensed level being fallen to 75% or less with respect to the background signal level being set to 100% is deter- mined as the thinly-colored defective granule, and a gran- ule whose sensed level being fallen to 50% or less with respect to the same is determined as the partly-colored defective granule. The above explained conventional background control and sensibility control greatly depend on human senses and experiences since such controls are carried out while ob- serving the actual sorting condition, and the matters of how a CCD sensor actually senses the granule and on what basis the signal processing section detects a granule as a defective granule had been estimated on the basis of the results of the actual sorting, without clarifying such matters. However, when such controls are made only based on the actual sorting results, there have been cases in which the background control and the sensibility control do not always accurately associate with the sorting results, since the sorting results are also influenced by other factors including the performance, timing control and the like of an ejector which is arranged at the downstream side of a sensing means for the defective granules. Another conventional technique is disclosed in Japa- nese Patent Application Kokai-Publication No. 11-94749. In this disclosure, there is disclosed a technique wherein the frequency distribution of quantity of light of the respective light received data is displayed on an opera- tion panel of a color sorting apparatus and an operator can set up an appropriate range of quantity of light (i.e., a difference between the upper limit threshold and the lower limit threshold) while observing the display. However, the technique of this disclosure also is directed to determine whether the control or setting of the thresh- old is appropriately carried out or not from the actual sorting results. Hence, this technique is not different from the foresaid prior art in terms of that the control is dependent on senses and experiences of the operator. As described above, in either of the above-explained prior arts, the determination whether the respective thresholds in order to sense the defective granules are in the state being properly set up or not has been made by observing the actually-sorted defective granules. Further, based on the sorting results, the controls of the respec- tive thresholds were repeatedly executed by necessity un- til the sorting results have come to be the proper sorting results in view of human senses and experiences. SUMMARY OF THE INVENTION Therefore, in order to overcome the foresaid disad- vantages in the prior arts, it is a first object of the present invention to provide a color sorting apparatus that displays images of a granule picked up by an imaging apparatus such as a CCD sensor on an operation panel to permit an operator to accurately perform the sensibility control while observing the displayed images. Further, it is a second object of the present inven- tion to provide a color sorting apparatus that has a per- formance to separately display a defective granule with a densely-colored part (hereinafter referred to as a partly- colored granule) and a different defective granule having a given area or more of thinly-colored part (hereinafter referred to as a thinly-colored granule) based on differ- ent thresholds in addition to the display of the whole images of a granule picked up by an imaging sensing appa- ratus . Still further, it is a third object of the present invention to provide a color sorting apparatus that can come back to the past after the sorting to display and check on what signal basis was the individual defective granule detected as the defective granule. The granule color sorting apparatus equipped with a display control device according to the present invention, that can achieve the objects of the present invention as described above, is characterized by comprising: a transferring means for transferring granules con- secutively; an illuminating means for illuminating the trans- ferred granules at a position for detection; an imaging means for imaging the illuminated granules at the position for detection; a contour processing means for outputting the contour of a granule as contour binary data based on a comparison of an image signal of the imaging means and a contour threshold; a defective determination means for determining a granule with a part exceeding a threshold that corresponds to a predetermined density as the defective granule and outputting the defective part of the defective granule in the form of defective pixel binary data; a granule display means for combining the defective pixel binary data output from the defective determination means to the contour binary data output from the contour processing means to display granules; a defective display means for displaying the defec- tive pixel binary data output from the defective determi- nation means; and a threshold adjustment means for altering thresholds while observing the respective display means. In the color sorting apparatus described above, the defective determination means comprises a first defective determination means for determining a granule having a given area or more of part exceeding a first threshold that corresponds to a first density as the defective gran- ule and outputting said defective part in the form of first defective pixel binary data, and a second defective determination means for determining a granule having a part exceeding a second threshold that corresponds to a second density being denser than the first density as the defective granule and outputting said defective part in the form of second defective pixel binary data. In the color sorting apparatus described above, the first defective pixel binary data represents the thin and large colored part (thinly-colored granule), while the second defective pixel binary data represents the densely- colored part (partly-colored granule). In the color sorting apparatus described above, said given area is determined in accordance with the number of sequential pixels each exceeding the first threshold level. In the color sorting apparatus described above, the defective display means comprises a first defective dis- play means for displaying a first defective pixel binary data output from a first defective determination means and a second defective display means for displaying a second defective pixel binary data output from a second defective determination means. In the color sorting apparatus described above, the first defective display means represents a monitor for thinly-colored one, and the second defective display means represents a monitor for partly colored one. The above-described color sorting apparatus may fur- ther comprise an image memory for storing the contour bi- nary data and the defective pixel binary data. In the color sorting apparatus described above, the thresholds may be changed or adjusted manually. With the granule color sorting apparatus equipped with a display control device according to the present invention, since the sensibility can be controlled after confirming the defective granules determined as defective based on the set-up sensibility by means of a display means, it is possible to perform more accurate sensibility controls than the prior arts in which the sensibility con- trol, etc. are carried out while observing the actually sorted granules. With the granule color sorting apparatus equipped with a display control device according to the present invention, the respective thresholds can be adjusted sepa- rately, since the defective granule having a part with dense coloration (partly-colored granules) and the defec- tive granule with a given area or more of thinly-colored part (thinly-colored granules), those which are sensible based on different thresholds in addition to the whole image of the granules, can be separately displayed. With the granule color sorting apparatus equipped with a display control device according to the present invention, trouble shooting can be facilitated, since it is possible to fully separate a part for which the defec- tive determination of a granule is carried out from an eliminating means using an ejector which is arranged at the downstream side of the part in terms of the accuracy. More particularly, the operator can immediately know, when the sorting results are unsatisfactory, the reason of such unsatisfactory results is due to either the defective or improper fixing or adjustment of the ejector, even though the sensibility control is favorably set up by the display control device. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be apparent from the follow- ing description of preferred embodiments of the invention explained with reference to the accompanying drawings, in which: Fig. 1 is a schematic cross section of the color sorting apparatus according to the present invention when viewing it from the side direction; Fig. 2 is a block diagram of a controller for the color sorting apparatus according to the present inven- tion; Fig. 3 is a view showing signals received by a CCD sensor and the binary signals; Fig. 4 is a view showing the whole image of granules and the defective parts, those which are displayed on a display panel; Fig. 5 is a flow chart showing the sensibility con- trol operation to be performed in the color sorting appa- ratus according to the present invention; and Fig. 6 is a view representing the conception of the sensibility control. REFERRED EMBODIMENT OF THE INVENTION Hereinafter, a preferred embodiment for carrying out the present invention will be described with reference to an example shown in the attached drawings. Figs. 1 through 5 respectively show an example of the embodiment for carrying out the present invention. Fig. 1 is a schematic cross section of the major portion and in- ternal structure of the color sorting apparatus 10 accord- ing to the present invention when they are viewed from the side direction. The color sorting apparatus 10 has a gran- ule feeding section 13 comprising a tank or hopper 11 and a vibrating feeder 12. It should be noted that typical granules are rice grains but not limited to the rice grains. The granules fed from the granule feeding section 13 naturally flow down consecutively through an inclined chute 14 having a predetermined width through which the granules lining in the transverse direction at a given distance can flow down and then are discharged from the bottom end of the chute into air along with a predetermined falling locus. In the surrounding of the predetermined falling lo- cus, at least a pair of optical detection units 15a, 15b are symmetrically arranged such that they have said fal- ling locus in the center therebetween. The optical detec- tion unit 15a comprises CCD line sensors 16a, 17a, a lamp 18a, a background plate 19a, etc. Similarly, the other optical detection unit 15b comprises CCD line sensors 16b, 17b, a lamp 18b, a background plate 19b, etc. The CCD line sensors 16a, 17a, 16b, 17b in the optical detection units 15a, 15b pick up images of the granules having reached the detecting position 0 in the falling locus and transmit the image pickup signals to a controller 20 that will be de- scribed in detail later. The controller 20 performs to specify the contours of the granules and the determination of the defective granules in accordance with the image pickup signals output from the CCD line sensors. The con- troller including its constitution will be described in detail later. When the controller 20 has detected the de- fective granule, an elimination signal is transmitted from the controller 20 toward an open-and-close valve 23 of an eliminating unit 22 containing an air nozzle 21 therein. The eliminating unit 22 ejects air through the air nozzle 21 to blow out only the defective granules from the given falling locus to eliminate them to the outside of the color sorting apparatus through a defective elimination port 24 in accordance with elimination signals transmitted from the controller 20. The normal granules having passed through the given falling locus, for those which the eliminating unit 22 was not actuated, are collected through a normal granule collection port 25. Next, the controller 20 that processes the image pickup signals output from the CCD line sensors 16a, 17a, 16b, 17b in the optical detection units 15a, 16a will be described with reference to Fig. 2. The controller 20 in- cludes: a contour comparator 31 in which a contour thresh- old is set up; a first comparator 32 in which a first threshold corresponding to a first density is set up; a second comparator 33 in which a second threshold corre- sponding to a second density that is denser than the first density is set up; an image processing circuit 34 for im- age processing output signals from the comparators de- scribed above; an image memory 35 for temporarily storing the respective images processed by the image processing circuit 34, and an input/output circuit 36 for controlling signals between an external apparatus that will be de- scribed later and the controller 20. The controller 20 further has a central processing unit (CPU) 37 as a main component that controls the operations of the respective components described above in accordance with a fixed pro- gram. The respective components described above are func- tionally connected or coupled therebetween through the CPU 37 as the main component. Components connected externally to the controller 20 through the input/output circuit 36 include a display panel 40, an eliminating unit 22 and a threshold adjust- ment input section 41. Now, how the contours of the granules and the defec- tive granules are detected by the contour comparator 31, the first comparator 32 and the second comparator 33 will be described hereunder with reference to Fig. 3. Fig. 3A represents signals at the time when the granules pass across the scanning line of, for example, the CCD line sensor 16a. At first, the contour of the granule is sensed when the granule exceeds, upon the passage, the contour threshold being set up at the lowest level, and the de- tected signals are sent to the image processing circuit 34 in the form of the contour binary data representing the contour of the granule as shown in Fig. 3B. Next, in what situation the granule having a part that corresponds to the relatively thin first density is detected as the defective granules will be described here- under. Here, it is supposed that the granule has two col- ored parts Fl, F2 each having a relatively thin first den- sity and a different area. In this case, signals exceeding the first threshold corresponding to the first density appear at two locations that correspond to said colored parts Fl, F2 in the signal waveforms shown in Fig. 3A. The areas of the colored parts correspond to the number of pixels. It is appreciated that the number of pixels in the thinly-colored part Fl locating at the first position in the advance direction is four (4), while the number of pixels in the colored part F2 locating at the second posi- tion is three (3). In the embodiment of the present inven- tion, signals output from the first comparator 32 is set up such that only the thinly-colored part having pixels more than four (4) is represented as the defective gran- ule. With the setting-up described above, only the data corresponding to the colored part Fl appears in the first defective pixel binary data that represents the defective granules exceeding the first threshold shown in Fig. 3C, and is sent to the subsequent image processing circuit 34. Since the granule having only a part, for example, the part F2, although it is thinly-colored but the colored area is relatively small, is treated as the normal granule in the present invention, it is possible to improve the yield of the sorting operation. Next, how the granule having a colored part F3 that corresponds to the second density being denser than the first density is detected as the defective granule will be described hereunder. In this case, signals exceeding the second threshold that corresponds to the second density appear in response to the part F3 in the signal waveforms shown in Fig. 3A. In this case, since the signal has the dense colored part, the granule is recognized as the de- fective granule irrespective of the magnitude of the area of the colored part, and the detected signal is transmit- ted to the image processing circuit 34 in the form of the second defective pixel binary data that represents the defective part exceeding the second threshold shown in Fig. 3D. Though it was supposed in the above description that the granule has two thinly-colored parts with different areas and one densely-colored part, the actual number of the colored parts in the granule is uncertain. It is ap- preciated from the description above that the granule can be determined as the normal granule if all the colored parts in the granule are only the part that corresponds to the part F2 described above of which colored part has a relatively-small area and is thin-colored, because such colored parts will not give much unacceptable disadvanta- geous effect on the product quality. Next, in what manner the image of a granule picked up by the CCD sensor is displayed on the display panel 40 will be described hereunder with reference to Fig. 4. The display control device according to the present invention is set up such that it is actuated only at the adjustment time before starting the steady-state or running opera- tion. The sample of the granules to be used at the time of the adjustment is a mixture of the normal granules and the defective granules having colored parts of which area and density have been known in advance. When flowing the sam- ple of the granules in the color sorting apparatus accord- ing to the present invention, the density and area of the colored parts are combined by the image processing circuit 34 shown in Fig. 2 with the contours of the respective granules, and the combined images are displayed on a gran- ule display monitor 40a arranged onto the display panel 40. That is to say, Fig. 4A represents the whole image of the flowing-down sample of granules picked up by the CCD sensor. Since the flow of the sample of the granules will be too fast when directly displaying the state of the ac- tual down flow and it will be difficult for the operator to observe the display, it is preferable to once store the picked-up images in the image memory 35, reduce the speed of the image display to a proper speed, and display them in a slow display mode. Alternatively, it is also possible to display the picked-up images in the form of still im- ages, if required. Fig. 4B shows such a state that the second defective pixel binary data output from the second comparator 33 in which the dense second threshold is set up as a value to be compared display only the densely-colored granules hav- ing been determined as the defective on the monitor 40b for the partial coloration, arranged onto the display panel 40 via the image processing circuit 34 and the in- put/output circuit 36. The broken lines in the drawings expediently show granules corresponding to the respective granules displayed on the granule display monitor 40a, and those granules with the broken lines are not displayed actually on the monitor. It may be appreciated that the densely-colored granules are displayed irrespective of the magnitudes of those areas because of the defective detec- tion based on the second threshold. It is also possible to configure such that the number of pixels in the colored part is displayed in response to a touch by an operator to said colored part displayed on the monitor 40b for the partial coloration. Fig. 4C shows such a state that the first defective pixel binary data output from the first comparator 32 in which the first threshold is set up as a value to be com- pared display only the thinly-colored granules having been determined as the defective on the monitor 40c for the thin coloration, arranged onto the display panel 40 via the image processing circuit 34 and the input/output cir- cuit 36. Like as described above, the broken lines in the drawings expediently show granules corresponding to the respective granules displayed on the granule display moni- tor 40a, and those granules with the broken lines are not displayed actually on the monitor. In this case, it is required to take the area of the colored granules into consideration because of the defective determination based on the first threshold. Only the colored granules each having a given area or more are displayed as the defective granules on the monitor 40c for the thin coloration. It may be appreciated that the two granules each having an area less than the predetermined area locating at the top right on the granule display monitor 40a are not recog- nized as the defective, and they are treated as the normal granules. Note that, in this case, as well as the previous case, it is possible to configure such that the number of the pixels in the thinly-colored part is displayed in re- sponse to an operator's touching to said part displayed on the monitor 40c for the thin coloration. Since an elimination signal is emitted from the con- troller 20 to the eliminating unit 22 via the input/output circuit 36 with respect to the granules displayed as the defective granules on the monitor 40b for the partial col- oration and the monitor 40c for the thin coloration, the operator can understand that the operational timing and the like of the eliminating unit 22 is not properly ad- justed when no granule that corresponds to the foresaid defective granules is contained in the defective granules in the sorted-out-granules. Therefore, trouble shooting can be made quite easily with the color sorting apparatus according to the present invention. When the granules having been not treated as the de- fective granules but treated as the normal granules, for example, at the previous adjustment time, after that the respective thresholds were once adjusted, (e.g., two thinly-colored granules displayed at the top right on the granule display monitor 40a shown in Fig. 4A) , are newly required to be treated as the defective granules, such a change can be readily achieved by altering the number of pixels described in connection with Fig. 3 from four (4) to three (3) or by operating a threshold adjustment input section 41 to alter the threshold itself. Since the ad- justment state of the previous time has been stored in the image memory 35, such resetting-up and altering can be readily made. Whether the intended sorting of the granules has been performed by altering the thresholds or making the resetting-up or not can be readily confirmed by flow- ing and then sorting the sample of the granules again. Now, the flow of the sensibility control operation to be carried out prior to the steady-state or running opera- tion will be described hereunder with reference to Fig. 5. Raw materials or the sample of the granules are fed into the color sorting apparatus 10 according to the present invention in Step 51, and the operation then starts. When the sample of the granules has reached the detection posi- tion, the images of the sample are picked up by the CCD sensor in Step 52. The picked-up image signals are simul- taneously fed to the contour comparator 31, the first com- parator 32 and the second comparator 33 in parallel. In the contour comparator 31, a comparison with the contour threshold is carried out, and the contour binary data rep- resenting the contours of the respective granules are out- put in Step 53. Alongside of Step 53, the picked-up image signals are compared with the first threshold that corre- sponds to the relatively-thin first density by the first comparator 32 in Step 54 to produce the binary data. At this time, only the case where a granule having a prede- termined number or more of pixels exceeding the first threshold is sequentially sensed in Step 55, such granule is determined as the defective one and is output in the form of the first defective pixel binary data. Alongside of Steps 53 and 54, the picked-up image signals are com- pared with the second threshold that corresponds to the relatively-dense second density in Step 56, and the binary data are produced when the signals exceed the second threshold. In this case, the granules are determined as the defective granules in Step 57 irrespective of the num- ber of the pixels exceeding the second threshold, and the defective granules are output in the form of the second defective pixel binary data. The first defective pixel binary data obtained in Step 55 are displayed as the thinly-colored granules on the monitor 40c for the thin coloration in Step 58. In Step 59, the second defective pixel binary data obtained in Step 57 are displayed in the form of the partly-colored granules on the monitor 40b for the partial coloration. In Step 60, the contour binary data obtained in Step 53, the first defective pixel binary data obtained in Step 55 and the second defective pixel binary data obtained in Step 57 are combined in the image processing circuit 34. The combined images obtained in Step 60 are displayed on the granule display monitor 40a in Step 61. In Step 62, it is checked visually whether the granules determined as the defective granules in Steps 58 and 59 are properly eliminated (separated) in the separa- tion process or not. When it was confirmed visually that the defective granules are properly eliminated or sorted out, a series of adjusting operations are finished in Step 63, and the operation is then shifted to the steady-state operation. As a result of the checking in Step 62, when it is noted that the control is required, a new threshold is set up by the threshold adjustment input section 41 in Step 64, and the operation comes back to Step 51 where feeding of the initial sample is carried out. Afterwards, the steps described above are carried out once again. Note that the color sorting apparatus equipped with a display control device according to the present invention is not limited to the scope of the above-described exam- ples shown by the drawings, and it is naturally feasible to apply various modifications and variation to this in- vention within a range not departing from the subject mat- ter of the present invention. i/VE CLAIM: 1. A granule color sorting apparatus (10) equipped with a display control device, characterized in that: a transferring means (13 (11,12), 14) for transferring granules consecutively; an illuminating means (18a, 18b) for illuminating the transferred granules at a detection position (O); an image pickup means (16a, 17a, 16b, 17b) for picking up images of the illuminated granules at the detection position; a contour processing means (31) for outputting the contour of the granule in the form of contour binary data based on a comparison of an image signal of the image pickup means with a contour threshold; a defective determination means (32, 33) for determining the granule having a part exceeding a threshold that corresponds to a predetermined density as a defective granule and outputting the defective part of the defective granule in the form of defective pixel binary data; a granule display means (40a) for combining the defective pixel binary data output from the defective determination means into the contour binary data output from the contour processing means and displaying the combined data; a defective display means (40b, 40c) for displaying the defective pixel binary data output from the defective determination means; and a threshold adjustment means (41) for altering a threshold while observing the respective display means. 2. The granule color sorting apparatus as claimed in claim 1, wherein the defective determination means comprises: a first defective determination means (32) for determining a granule having a predetermined area or more of part that exceeds a first threshold corresponding to a first density as the defective granule and outputting the defective part in the form of first defective pixel binary data; and a second defective determination means (33) for determining a granule having a part exceeding a second threshold that corresponds to a second density being denser than the first density as the defective granule and outputting the defective part in the form of second defective pixel binary data. 3. The granule color sorting apparatus as claimed in claim 2, wherein the first defective pixel binary data represents a thin and large part (thinly-colored granule), and the second defective pixel binary data represents a densely- colored part (partly-colored granule). 4. The granule color sorting apparatus as claimed in claim 2, wherein the predetermined area is determined in accordance with the number of pixels in series that exceed the first threshold. 5. The granule color sorting apparatus as claimed in claim 2, wherein the defective display means comprises: a first defective display means (40c) for displaying the first defective pixel binary data output from the first defective determination means; and a second defective display means (40b) for displaying the second defective pixel binary data output from the second defective determination means. 6. The granule color sorting apparatus as claimed in claim 5, wherein the first defective display means (40c) is a monitor for thin coloration and the second defective display means (40b) is a monitor for partial coloration. 7. The granule color sorting apparatus as claimed in claim 1, wherein the color sorting apparatus further comprises an image memory (35) for storing the contour binary data and the defective pixel binary data. 8. The granule color sorting apparatus as claimed in claim 1, wherein the thresholds are manually adjusted by the threshold adjustment means (41). A granule color sorting apparatus (10) equipped with a display control device, characterized in that: a transferring means (13 (11,12), 14) for transferring granules consecutively; an illuminating means (18a, 18b) for illuminating the transferred granules at a detection position (O); an image pickup means (16a, 17a, 16b, 17b) for picking up images of the illuminated granules at the detection position; a contour processing means (31) for outputting the contour of the granule in the form of contour binary data based on a comparison of an image signal of the image pickup means with a contour threshold; a defective determination means (32, 33) for determining the granule having a part exceeding a threshold that corresponds to a predetermined density as a defective granule and outputting the defective part of the defective granule in the form of defective pixel binary data; a granule display means (40a) for combining the defective pixel binary data output from the defective determination means into the contour binary data output from the contour processing means and displaying the combined data; a defective display means (40b, 40c) for displaying the defective pixel binary data output from the defective determination means; and a threshold adjustment means (41) for altering a threshold while observing the respective display means.

Documents:

523-kol-2004-abstract.pdf

523-kol-2004-claims.pdf

523-kol-2004-correspondence.pdf

523-kol-2004-description (complete).pdf

523-kol-2004-drawings.pdf

523-kol-2004-examination report.pdf

523-kol-2004-form 1.pdf

523-kol-2004-form 18.pdf

523-kol-2004-form 2.pdf

523-kol-2004-form 3.pdf

523-kol-2004-form 5.pdf

523-KOL-2004-FORM-27.pdf

523-kol-2004-granted-abstract.pdf

523-kol-2004-granted-claims.pdf

523-kol-2004-granted-correspondence.pdf

523-kol-2004-granted-description (complete).pdf

523-kol-2004-granted-drawings.pdf

523-kol-2004-granted-examination report.pdf

523-kol-2004-granted-form 1.pdf

523-kol-2004-granted-form 18.pdf

523-kol-2004-granted-form 2.pdf

523-kol-2004-granted-form 3.pdf

523-kol-2004-granted-form 5.pdf

523-kol-2004-granted-pa.pdf

523-kol-2004-granted-priority document.pdf

523-kol-2004-granted-reply to examination report.pdf

523-kol-2004-granted-specification.pdf

523-kol-2004-granted-translated copy of priority document.pdf

523-kol-2004-pa.pdf

523-kol-2004-priority document.pdf

523-kol-2004-reply to examination report.pdf

523-kol-2004-specification.pdf