Title of Invention

MULTILAYER SLIDING MEMBER

Abstract MULTILAYER SLIDING MEMBER A multilayer sliding member has a resin composition filled in pores of, and coated on the surface of, a porous sintered metal layer 2 formed on the surface of a metallic backing plate 1. The resin composition is formed by compounding a phosphate, a carbon black, a melt moldable fluororesin, and a PTFE serving as a principal component, and is preferably formed by further containing graphite and/or a low molecular weight PTFE.
Full Text

DESCRIPTION
TECHNICAL FIELD
[0001]
The present invention relates to a multilayered sliding member exhibiting
excellent frictional wear properties in use under hydrodynamic lubrication, mixed
lubrication, or boundary lubrication conditions.
BACKGROUND ART
[0002]
Patent document 1: U.S. Pat. No. 2,689,380
Patent document 2: JP-B-31-2452
Patent document 3: JP-B-41-1868
Patent document 4: JP-B-61-28846
Patent document 5: JP-B-62-33275
[0003]
Polytetrafluoroethylene resins (hereafter abbreviated as PTFE) are widely
used in sliding members such as bearings since they excel in self-lubricating properties
and have low coefficients of friction and high chemical and heat resistance. However,
a sliding member made of PTFE alone is poor in wear resistance and a load carrying
capacity, so that the defects of the PTFE are compensated for by adopting the
following measures according to the application of use of the sliding member: (a)
incorporating into the PTFE a solid lubricant such as graphite, molybdenum disulfide,
or the like and/or a reinforcing material such as glass fibers or carbon fibers, and (b)
filling the PTFE in the pores of a porous sintered metal layer formed on a steel backing

plate and coating the surface of the porous sintered metal layer therewith.
[0004]
The sliding member having the above-described form (b) is so called a
multilayered sliding member, and multilayered sliding members have been proposed in
which PTFE or the PTFE containing a filler composed of lead or a lead oxide is filled
in the pores of a porous sintered metal layer formed on a steel backing plate and is
coated on the surface of the porous sintered metal layer (refer to patent documents 1, 2,
and 3).
[0005]
In addition, a multilayered sliding member has also been proposed in which a
melt moldable fluororesin composed of a tetrafluoroediylene-hexafluoropropylene
copolymer or a tetrafluoroethylene-perfluoroalkylvinylether copolymer is contained in
the PTFE as another filler (refer to Patent documents 4 and 5).
DISCLOSURE OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION
[0006]
In the above-described various sliding members, fillers are selected which are
suited to respective working conditions including numerous different working
conditions, for example under hydrodynamic lubrication, mixed lubrication, or
boundary lubrication conditions, and therefore, it is difficult to say that these sliding
members satisfy all of these working conditions.
[0007]
In addition, in the PTFE composition for a sliding member, attempts have
been made to use, for example, graphite, molybdenum disulfide or other metal sulfide,

a metal oxide, or inorganic fibers such as glass fibers and carbon fibers, which are used
as fillers for numerous engineering plastics. However, although these fillers, in fact,
contribute to the improvement of the wear resistance of the resin layer, they often
cause the problem of hampering the low frictional properties peculiar to PTFE. In
particular, lead as the filler is widely used as it improves the wear resistance of the
resin layer without hampering the low frictional properties inherent to PTFE.
However, from the secondary standpoint of such as the environmental pollution and
public hazards in recent years, the situation is such that there is no other alternative
than to abandon the use of it.
[0008]
The present invention has been devised in view of the above-described aspects,
and its object is to provide a multilayered sliding member excelling in frictional wear
properties under numerous different working conditions, such as under hydrodynamic
lubrication, mixed lubrication, or boundary lubrication conditions.
MEANS FOR SOLVING THE PROBLEMS
[0009]
As a result of the present inventors' earnest studies for attaining the
above-described object, it has been found that a multilayered sliding member which
comprises a resin composition filled in pores of, and coated on the surface of, a porous
sintered metal layer formed on the surface of a steel backing plate, and which uses the
resin composition having specific amounts of a phosphate, a carbon black, and a melt
moldable fluororesin compounded in a PTFE or further containing at least one of
graphite, molybdenum disulfide, and a low molecular weight PTFE in a predetermined
amount, is capable of exhibiting excellent frictional wear properties under different

working conditions, such as under hydrodynamic lubrication, mixed lubrication, or
boundary lubrication conditions.
[0010]
The present invention has been completed on the basis of this finding. Its
first gist resides in a multilayered sliding member comprising a resin composition
filled in pores of, and coated on a surface of, a porous sintered metal layer formed on a
surface of a metallic backing plate, the resin composition comprising 3 to 25% by
weight of a phosphate, 0.3 to 3% by weight of a carbon black, 3 to 30% by weight of a
melt moldable fluororesin, and the balance of PTFE.
[0011]
Further, a second gist resides in a multilayered sliding member wherein the
resin composition contains 1 to 5% by weight of graphite or 2 to 10% by weight of
molybdenum disulfide and/or 3 to 15% by weight of a low molecular weight PTFE.
ADVANTAGEOUS EFFECT OF THE INVENTION
[0012]
According to the present invention, a multilayered sliding member is provided
which exhibits excellent frictional wear properties under different working conditions,
such as under hydrodynamic lubrication, mixed lubrication, or boundary lubrication
conditions.
[0013]
Hereafter, a detailed description will be given of the present invention.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
[0014]

Fig. 1 is a cross-sectional view illustrating an embodiment of a multilayered
sliding member in accordance with the invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0015]
The multilayered sliding member in accordance with the invention comprises
a resin composition filled in the pores of, and coated on the surface of, a porous
sintered metal layer formed on the surface of a metallic backing plate. The resin
composition is formed by compounding a phosphate, a carbon black, a melt moldable
fluororesin, and a PTFE serving as a principal component, and is preferably formed by
further containing graphite or molybdenum disulfide and/or a low molecular weight
PTFE.
[0016]
The phosphate used in itself exhibits no lubricity, but by being compounded
with a mixture of the PTFE, the carbon black, and the melt moldable fluororesin, the
phosphate exhibits the effects of promoting the formation on the surface of a mating
member of a mixed film consisting of the PTFE, the carbon black, and the melt
moldable fluororesin in sliding on the mating member, enhancing its retentivity on the
surface of the mating member, and enhancing the durability.
[0017]
The compounding amount of the phosphate is normally 3 to 25% by weight,
preferably 10 to 20% by weight. If the compounding amount is less than 3% by
weight, the effects of formability on the surface of the mating member of the mixed
film consisting of the PTFE, the carbon black, and the melt moldable fluororesin, its
retentivity on the surface of the mating member, and the durability of the mixed film

are not exhibited. Meanwhile, if the compounding amount is more than 25% by
weight, a problem arises in the formability of the mixed film on the surface of the
mating member, so that the formation of a satisfactory mixed film on the surface of the
mating member becomes difficult, with the result that the frictional wear properties can
deteriorate.
[0018]
As the phosphate, it is possible to cite metal salts of such as orthophosphoric
acid, pyrophosphoric acid, and metaphosphoric acid, and a mixture thereof. Among
them, the metal salts of pyrophosphoric acid and metaphosphoric acid are preferable.
As the metal, an alkali metal and an alkaline earth metal are preferable, and calcium
(Ca) and magnesium (Mg) are more preferable. Specifically, it is possible to cite by
way of example calcium pyrophosphate (Ca2P2O7), magnesium pyrophosphate
(Mg2P2O7), calcium metaphosphate ([Ca(PO3)2]n), magnesium metaphosphate
([Mg(PO3)2]n), aluminum metaphosphate ([Al(P03)3]n), and the like. Among them,
calcium metaphosphate ([Ca(PO3)2]n) and magnesium metaphosphate ([Mg(PO3)2]n)
are preferable since they exhibit the above-described effects most satisfactorily.
[0019]
The carbon black exhibits the effects of reinforcing the PTFE constituting the
principal component and of improving the wear resistance. In addition, since it
possesses the property of retaining oil, even under the boundary or mixed lubrication
conditions where an oil or grease shortage is likely to occur in oil or grease lubrication,
it is possible to retain the oil content and prevent the occurrence of a defect such as
seizure due to the oil shortage.
[0020]
The compounding amount of the carbon black is normally 0.3 to 3% by

weight, preferably 0.5 to 2% by weight. If the compounding amount is less than 0.3%
by weight, the above-described effects are not exhibited sufficiently. Meanwhile, if
the compounding amount is more than 3% by weight, its proportion in the resin
composition becomes large and can lower the wear resistance to the contrary.
[0021]
As the carbon black, it is possible to cite acetylene black, oil furnace black,
thermal black, channel black, gas furnace black, and the like. In particular, preferable
is one whose primary particle size is less than approximately 200 nm, preferably 10 nm
to 100 nm, whose DBP absorption is not less than 100 ml/100 g, preferably not less
than 300 ml/100 g, which has a hollow structure and is provided with a kind of a
porous structure, and which has an appropriate chain structure. Specifically, it is
possible to cite by way of illustration "Ketjenblack EC (tradename)" and "Ketjenblack
EC-600JD (tradename)" manufactured by KETJENBLACK INTERNATIONAL
COMPANY as being preferable ones.
[0022]
The melt moldable fluororesin exhibits the effects of reinforcing the PTFE by
being mutually dissolved with the PTFE constituting the principal component and of
improving the wear resistance which is the drawback of the PTFE.
[0023]
The compounding amount of the melt moldable fluororesin is normally 3 to
30% by weight, preferably 5 to 15% by weight. If the compounding amount is less
than 3% by weight, the above-described effects are not exhibited sufficiently.
Meanwhile, if the compounding amount is more than 30% by weight, the amount of
the melt moldable fluororesin becomes large and impairs the low frictional properties
peculiar to the PTFE although the wear resistance is further improved.

[0024]
As the melt moldable fluororesin, it is possible to cite a
tetrafluoroethylene-hexafluoropropylene copolymer (hereafter abbreviated as the FEP)
or a tetrafluoroethylene-perfluoroalkylvinylether copolymer (hereafter abbreviated as
the PFA). Specifically, it is possible to cite by way of example "NEOFLON FEP
(tradename)" manufactured by Daikin Industries, Ltd. as the FEP and "Teflon
(registered trademark) MP powder" manufactured by DU PONT-MITSUI
FLUOROCHEMICALS COMPANY, LTD. as the PFA.
[0025]
As the PTFE constituting the principal component of the resin composition, a
PTFE for fine powder is used. Specifically, it is possible to cite "Teflon (registered
trademark) 6CJ' or the like manufactured by DU PONT-MITSUI
FLUOROCHEMICALS COMPANY, LTD., "POLYFLON F201 (tradename)" or the
like manufactured by Daikin Industries, Ltd., "Fluon CD076 (tradename)," "Fluon
CD090 (tradename)," or the like manufactured by Asahi Glass Co., Ltd.
[0026]
The compounding amount of the PTFE in the resin composition is the
remaining amount obtained by subtracting the compounding amounts of the fillers
from the amount of the resin composition, and is preferably not less than 50% by
weight, more preferably 50 to 75% by weight.
[0027]
In the resin composition in the multilayered sliding member of the invention,
1 to 5% by weight of graphite or 2 to 10% by weight of molybdenum disulfide may be
compounded for the purposes of further improving the wear resistance and improving
the affinity with lubricating oil.

[0028]
In addition, the resin composition in the multilayered sliding member of the
invention may contain 3 to 15% by weight of a low molecular weight PTFE for the
purpose of improving the affinity in an early period of sliding with the mating member.
The low molecular weight PTFE is a PTFE whose molecular weight is reduced by
decomposing a high molecular weight PTFE (molding powder or fine powder) by such
as exposure to radiation or by controlling the molecular weight during the
polymerization of the PTFE. Specifically, it is possible to cite "TLP-IOF
(tradename)" or the like manufactured by DU PONT-MITSUIFLUOROCHEMICALS
COMPANY, LTD., "Lubron L-5 (tradename)" or the like manufactured by Daikin
Industries, Ltd., "Fluon L169J (tradename)" or the like manufactured by Asahi Glass
Co., Ltd., and "KTL-8N (tradename)" or the like manufactured by KITAMURA
LIMITED.
[0029]
Next, a description will be given of a method of manufacturing the metallic
backing plate, the porous sintered metal layer formed integrally on the surface of this
backing plate, and the multilayered sliding member having a resin composition filled in
the pores of, and coated on the surface of, the porous sintered metal layer. The
metallic backing plate is used by being appropriately selected from a cold-rolled steel
plate (SPCC), a pure copper plate of such as oxygen free copper (type 1 or type 2 of
oxygen free copper billets and cakes defined in JIS-H-2123) or tough pitch copper
(tough pitch copper billets and cakes defined in JIS-H-2123), and a copper alloy plate
of such as phosphor bronze, depending on the application. As for the metallic
backing plate, it is preferable to use a continuous strip which is provided as a hoop
wound in coil form, but the metallic backing plate is not necessarily limited to the

continuous strip, and it is also possible to use a strip cut to an appropriate length. In
the case where such a strip or a steel plate, in particular, is used, the plate may be
provided with such as copper plating or tin plating, as required, to improve corrosion
resistance.
[0030]
The metal powder for forming the porous sintered metal layer is formed of a
copper alloy excelling in frictional wear properties, such as bronze or phosphor bronze,
but may be formed of, for instance, an aluminum alloy or iron other than the copper
alloy, depending on the purpose and application. As the form of particles of these
metal powders, it is possible to use a metal powder having massive shape, spherical
shape, or other irregular shapes. Their particle size is preferably of such a degree that
the particles pass through an 80-mesh sieve but do not pass through a 350-mesh sieve.
It is required that the metal powder particles of the porous sintered metal layer are
strongly bonded to each other and the sintered metal layer is strongly bonded to the
aforementioned steel plate strip, and that the sintered metal layer has a predetermined
thickness and the required porosity. The thickness of the porous sintered metal layer
is generally 0.15 to 0.40 mm, preferably 0.2 to 0.3 mm. The porosity of the porous
sintered metal layer is generally not less than 10% by volume, preferably 15 to 40% by
volume.
[0031]
A resin composition with wettability imparted thereto can be obtained by a
method in which the PTFE and the aforementioned fillers are mixed, and a
petroleum-based solvent is then added to the resultant mixture and is mixed under
stirring. The mixing of the PTFE and the fillers is effected at a temperature not more
than the room-temperature transition point (19°C) of the PTFE, preferably from 10 to

18°C. Further, the resultant mixture and the petroleum-based solvent are also mixed
under stirring at the same temperature as described above. By the adoption of such a
temperature condition, fibrillation of the PTFE can be inhibited, thereby making it
possible to obtain a homogeneous mixture.
[0032]
As the petroleum-based solvent, naphtha, toluene, xylene, or a mixed solvent
of an aliphatic solvent or a naphthenic solvent is used. The ratio of the
petroleum-based solvent used is from 15 to 30 parts by weight based on 100 parts by
weight of a mixture of the PTFE powder and the fillers. If the ratio of the
petroleum-based solvent used is less than 15 parts by weight, the ductility of the resin
composition with the wettability imparted thereto is poor in the below-described filling
and coating step of me porous sintered metal layer, so that uneven filling and coating
of the sintered layer is likely to occur. On the other hand, if the ratio of the
petroleum-based solvent used exceeds 30 parts by weight, not only does the filling and
coating operation become difficult, but the uniformity of the coating thickness of the
resin composition can be impaired, and the adhesion strength between the resin
composition and the sintered layer becomes deteriorated.
[0033]
The sliding member in accordance with the present invention is produced
through the following steps (a) to (d).
[0034]
(a) A resin composition with wettability imparted thereto is supplied by being
spread over a porous sintered metal layer formed on a metallic backing plate selected
from a steel plate and a copper or copper alloy plate, and is subjected to rolling by a
roller, thereby filling the resin composition into pores of the porous sintered metal

layer and forming on the surface of the porous sintered metal layer a coating layer
composed of the resin composition having a uniform thickness. In this step, the
thickness of the coating layer is set to from 2 to 2.2 times the coating layer thickness
required for the resin composition in a final product. The filling of the resin
composition into pores of the porous sintered metal layer substantially proceeds in this
step.
[0035]
(b) The backing plate thus treated in the step (a) is held in a drying furnace
heated to a temperature of from 200 to 250°C for several minutes to remove the
petroleum-based solvent. Then, the dried resin composition is subjected to pressure
roller treatment using a roller under a pressure of 300 to 600 kgf/cm2 to obtain the
predetermined thickness of the coating layer.
[0036]
(c) The backing plate thus treated in the step (b) is introduced into a heating
furnace, and heated at a temperature of from 360 to 380°C for a period between several
minutes and 10 and several minutes to sinter the resin composition. Then, the backing
plate is removed out of the heating furnace and is subjected to roller treatment again to
adjust the variation of the size.
[0037]
(d) The backing plate subjected to the size adjustment in the step (c) is cooled
(air-cooled or naturally cooled), and then subjected to correction roller treatment, as
required, so as to correct the waviness or the like of the backing plate, thereby
obtaining a desired sliding member.
[0038]
In the sliding member obtained through the steps (a) to (d), the thickness of

the porous sintered metal layer is set to 0.10 to 0.40 mm, and the thickness of the
coating layer formed of the resin composition is set to 0.005 to 0.15 mm. The sliding
member thus obtained is cut into an appropriate size, and is used as a flat sliding plate,
or used as a cylindrical winding bush by being bent round.
EXAMPLES
[0039]
Hereafter, a detailed description will be given of the present invention with
reference to examples. However, these examples are merely illustrative and not
intended to limit the invention thereto. In the following examples, the frictional wear
properties of the multilayered sliding members were evaluated by the following test
methods (1) and (2).
[0040]
In-oil thrust test (1): The coefficient of friction and the amount of wear were
measured under the conditions listed in Table 1. Then, the coefficient of friction
shows the coefficient of friction measured during the time of stability from one hour
after the start of the test until the completion of the test. Further, the amount of wear
shows the amount of dimensional change of the sliding surface after completion of the
test.
[0041]
(Table 1)
Sliding velocity: 5 m/min.
Load: 300 kgf/cm2
Test time: 8 hrs.
Lubricating oil: ester oil (kinematic viscosity: 25 mm2/s (40°C))

Mating member: carbon steel for machine structural use (S45C)
[0042]
In-oil thrust test (2): The coefficient of friction and the amount of wear were
measured under the conditions listed in Table 2. Then, the coefficient of friction
shows the coefficient of friction measured during the time of stability from one hour
after the start of the test until the completion of the test. Further, the amount of wear
shows the amount of dimensional change of the sliding surface after completion of the
test.
[0043]
(Table 2)
Sliding velocity: 1 m/min.
Load: 300 kgf/cm2
Test time: 8 hrs.
Lubricating oil: ester oil (kinematic viscosity: 25 mm2/s (40°C))
Mating member: carbon steel for machine structural use (S45C)
[0044]
Examples 1 to 18 and Comparative Examples 1 to 4
In the following examples and comparative examples, "POLYFLON F201
(tradename)" manufactured by Daikin Industries, Ltd. was used as the PTFE, and a
mixed solvent of an aliphatic solvent and a naphthenic solvent ("Exxsol (tradename)"
manufactured by Exxon Chemical Company) was used as the petroleum-based solvent.
[0045]
First, the PTFE and the fillers shown in Tables 3 to 7 were charged into a
Henschel mixer, and mixed under stirring. 20 parts by weight of the petroleum-based
solvent was compounded with 100 parts by weight of the resultant mixture, and mixed

at a temperature (15°C) lower than the room-temperature transition point of the PTFE,
to obtain a resin composition.
[0046]
The resin composition thus obtained was spread over a porous sintered metal
(bronze) layer formed on the surface of a backing plate formed of a steel plate, and
rolled by a roller for filling the resin composition into pores of the porous sintered
metal layer and coating the surface of the porous sintered metal layer therewith,
thereby obtaining a multilayered plate having a resin composition layer on the porous
sintered metal layer. This multilayered plate was held in a hot-air drying furnace
heated to 200°C for 5 minutes to remove the solvent. Then, the dried multilayered
plate was rolled under a pressure by a roller, such that the thickness of the resin
composition layer coated on the porous sintered metal layer was set to 10 µm (0.01
mm).
[0047]
The multilayered plate thus pressure-treated was then introduced into a
heating furnace, and heated at a temperature of 370°C for 10 minutes to sinter the resin
composition. Subsequently, the plate was subjected to pressure treatment again by the
roller to make the dimensional adjustment and correction of the waviness and the like,
thereby fabricating a multilayered sliding member. The multilayered sliding member,
upon completion of the correction, was cut to obtain a multilayered sliding member
test piece having each side length of 30 mm. Fig. 1 shows a cross-sectional view of
the multilayered sliding member thus obtained. In the drawing, reference numeral 1
denotes a metallic backing plate formed of a steel plate; 2 denotes a porous sintered
metal layer; and 3 denotes a coating layer (sliding layer) composed of the resin
composition filling pores of the porous sintered metal layer 2 and coating the surface

of the porous sintered metal layer 2.
[0048]
The results of the thrust tests (1) and (2) for each of the multilayered sliding
members are shown in Tables 3 to 7. The compounding amounts in the tables are
shown by "% by weight". It should be noted that "Ketjenblack EC-600JD
(tradename)" manufactured by KETJENBLACK INTERNATIONAL COMPANY was
used as the carbon black, and "NEOFLON FEP (tradename)" manufactured by Daikin
Industries, Ltd. and "Teflon (registered trademark) MP powder" manufactured by DU
PONT-MITSUI FLUOROCHEMICALS COMPANY, LTD. were used as the melt
moldable fluororesins.










[0054]
From the above-described test results, the multilayered sliding members in the
examples of the invention exhibited low coefficients of friction and stable performance
and showed very low values as their amounts of wear throughout the test time even
under boundary or mixed lubrication conditions. Meanwhile, the multilayered sliding
members in the comparative examples showed high coefficients of friction and large
amounts of wear, and were inferior in the frictional wear properties.

WE CLAIM:
1. A multilayered sliding member comprising a resin composition filled in pores
of, and coated on a surface of, a porous sintered metal layer formed on a surface of a
metallic backing plate, said resin composition comprising:
3 to 25% by weight of a phosphate which includes a magnesium
metaphosphate,
0.3 to 3% by weight of a carbon black selected from acetylene black, oil
furnace black, thermal black, channel black, and gas furnace black, which has a hollow
structure, a porous structure, and a chain structure, whose DBP absorption is not ess
than 100 ml/100 g,
3 to 30% by weight of a melt moldable fluororesin selected from a
tetrafluoroethylene-perfluoroalkylvinylether copolymer and a tetrafuoroethylene-
hexafluoropropylene copoymer,
3 to 15% by weight of a low molecular weight polytetrafluoroethylene resin,
and
the balance of a polytetrafluoroethylene resin.
2. The multilayered sliding member as claimed in claim 1, wherein said metallic
backing plate is selected from a steel plate, a copper plate, and a copper alloy plate.
3. The multilayered sliding member as claimed in claim 1, wherein said resin
composition contains 1 to 5% by weight of graphite as an additional component.
4. The multilayered sliding member as claimed in claim 1, wherein said resin

composition contains 2 to 10% by weight of molybdenum disulfide as an additional
component.


ABSTRACT
MULTILAYER SLIDING MEMBER
A multilayer sliding member has a resin composition filled in pores of, and
coated on the surface of, a porous sintered metal layer 2 formed on the surface of a
metallic backing plate 1. The resin composition is formed by compounding a
phosphate, a carbon black, a melt moldable fluororesin, and a PTFE serving as a
principal component, and is preferably formed by further containing graphite and/or a
low molecular weight PTFE.

Documents:

02614-kolnp-2007-abstract.pdf

02614-kolnp-2007-claims.pdf

02614-kolnp-2007-correspondence others.pdf

02614-kolnp-2007-description complete.pdf

02614-kolnp-2007-drawings.pdf

02614-kolnp-2007-form 1.pdf

02614-kolnp-2007-form 3.pdf

02614-kolnp-2007-form 5.pdf

02614-kolnp-2007-international publication.pdf

02614-kolnp-2007-international search report.pdf

02614-kolnp-2007-others.pdf

02614-kolnp-2007-pct request form.pdf

2614-KOLNP-2007-(14-06-2012)-CORRESPONDENCE.pdf

2614-KOLNP-2007-(14-06-2012)-FORM-3.pdf

2614-KOLNP-2007-(21-12-2011)-ABSTRACT.pdf

2614-KOLNP-2007-(21-12-2011)-AMANDED CLAIMS.pdf

2614-KOLNP-2007-(21-12-2011)-AMANDED PAGES OF SPECIFICATION.pdf

2614-KOLNP-2007-(21-12-2011)-DESCRIPTION (COMPLETE).pdf

2614-KOLNP-2007-(21-12-2011)-DRAWINGS.pdf

2614-KOLNP-2007-(21-12-2011)-EXAMINATION REPORT REPLY RECEIVED.pdf

2614-KOLNP-2007-(21-12-2011)-FORM-1.pdf

2614-KOLNP-2007-(21-12-2011)-FORM-2.pdf

2614-KOLNP-2007-(21-12-2011)-OTHERS.pdf

2614-KOLNP-2007-(26-09-2011)-CORRESPONDENCE.pdf

2614-KOLNP-2007-(26-09-2011)-FORM 3.pdf

2614-KOLNP-2007-ASSIGNMENT 1.1.pdf

2614-KOLNP-2007-ASSIGNMENT.pdf

2614-KOLNP-2007-CORRESPONDENCE 1.1.pdf

2614-KOLNP-2007-CORRESPONDENCE 1.2.pdf

2614-KOLNP-2007-CORRESPONDENCE 1.3.pdf

2614-KOLNP-2007-EXAMINATION REPORT.pdf

2614-KOLNP-2007-FORM 18 1.1.pdf

2614-kolnp-2007-form 18.pdf

2614-KOLNP-2007-FORM 3 1.2.pdf

2614-KOLNP-2007-FORM 3-1.1.pdf

2614-KOLNP-2007-FORM 5.pdf

2614-KOLNP-2007-GPA 1.1.pdf

2614-KOLNP-2007-GPA.pdf

2614-KOLNP-2007-GRANTED-ABSTRACT.pdf

2614-KOLNP-2007-GRANTED-CLAIMS.pdf

2614-KOLNP-2007-GRANTED-DESCRIPTION (COMPLETE).pdf

2614-KOLNP-2007-GRANTED-DRAWINGS.pdf

2614-KOLNP-2007-GRANTED-FORM 1.pdf

2614-KOLNP-2007-GRANTED-FORM 2.pdf

2614-KOLNP-2007-GRANTED-SPECIFICATION.pdf

2614-KOLNP-2007-OTHERS.pdf

2614-KOLNP-2007-PCT PRIORITY.pdf

2614-KOLNP-2007-REPLY TO EXAMINATION REPORT.pdf

abstract-02614-kolnp-2007.jpg


Patent Number 252853
Indian Patent Application Number 2614/KOLNP/2007
PG Journal Number 23/2012
Publication Date 08-Jun-2012
Grant Date 05-Jun-2012
Date of Filing 12-Jul-2007
Name of Patentee OILES CORPORATION
Applicant Address 30-5,HAMAMATSU-CHO 1-CHOME, MINATO-KU, TOKYO
Inventors:
# Inventor's Name Inventor's Address
1 YANASE SUMIHIDE C/O OILES CORPORATION, FUJISAWA PLANT, 8, KIRIHARA-CHO, FUJISAWA-SHI, KANAGAWA 252-0811
2 KUGO MASAFUMI C/O OILES CORPORATION, FUJISAWA PLANT, 8, KIRIHARA-CHO, FUJISAWA-SHI, KANAGAWA 252-0811
3 SEKINE TOSHIHIKO C/O OILES CORPORATION, FUJISAWA PLANT, 8, KIRIHARA-CHO, FUJISAWA-SHI, KANAGAWA 252-0811
PCT International Classification Number B32B 15/082
PCT International Application Number PCT/JP05/ 023274
PCT International Filing date 2005-12-19
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2005-008651 2005-01-17 Japan