Title of Invention

OPTICAL FIBERS

Abstract Fiber optics applicable to optical communication in not only 1.3 μm wavelength band but 1.55 μm wavelength band as a transmission medium in a WDM optical communication system capable of transmitting a multi-channel signal light to enable a signal transmission in a broader band. The fiber optics mainly consist of quartz glass and are provided with a core area along a specified axis and a clad area surrounding the core area. The fiber optics with such a structure have, as typical optical characteristics, a cable cutoff wavelength of up to 1260 nm, a transmission loss of up to 0.32 dB/km at a wavelength of 1310 nm, and an OH group-caused loss increase amount of up to 0.3 dB/km at a wavelength of 1380 nm.
Full Text

Documents:

750-CHENP-2006 AMENDED CLAIMS 09-05-2011.pdf

750-chenp-2006 amended claims 19-07-2011.pdf

750-chenp-2006 form-3 09-05-2011.pdf

750-CHENP-2006 CORRESPONDENCE OTHERS 19-07-2011.pdf

750-CHENP-2006 EXAMINATION REPORT REPLY RECIEVED 09-05-2011.pdf

750-chenp-2006 form-3 19-07-2011.pdf

750-chenp-2006 other patent document 19-07-2011.pdf

750-CHENP-2006 POWER OF ATTORNEY 09-05-2011.pdf

750-CHENP-2006 CORRESPONDENCE OTHERS 09-11-2010.pdf

750-chenp-2006-abstract.pdf

750-chenp-2006-claims.pdf

750-chenp-2006-correspondence-others.pdf

750-chenp-2006-description(complete).pdf

750-chenp-2006-drawings.pdf

750-chenp-2006-form 1.pdf

750-chenp-2006-form 3.pdf

750-chenp-2006-form 5.pdf

750-chenp-2006-pct.pdf


Patent Number 248536
Indian Patent Application Number 750/CHENP/2006
PG Journal Number 30/2011
Publication Date 29-Jul-2011
Grant Date 22-Jul-2011
Date of Filing 02-Mar-2006
Name of Patentee SUMITOMO ELECTRIC INDUSTRIES, LTD
Applicant Address 5-33, KTAHAMA 4-CHOME, CHUO-KU, OSAKA-SHI, OSAKA 541-0041
Inventors:
# Inventor's Name Inventor's Address
1 SASAOKA, EISUKE, C/O YOKOHAMA WORKS OF SUMITOMO ELECTRIC, INDUSTRIES, LTD., 1, TAYA-CHO, SAKAE-KU, YOKOHAMA-SHI, KANAGAWA 244-8588, JAPAN
2 YAMAMOTO, YOSHINORI, C/O YOKOHAMA WORKS OF SUMITOMO ELECTRIC, INDUSTRIES, LTD., 1, TAYA-CHO, SAKAE-KU, YOKOHAMA-SHI, KANAGAWA 244-8588, JAPAN
3 YAMAMOTO, YOSHINORI, C/O YOKOHAMA WORKS OF SUMITOMO ELECTRIC, INDUSTRIES, LTD., 1, TAYA-CHO, SAKAE-KU, YOKOHAMA-SHI, KANAGAWA 244-8588, JAPAN
PCT International Classification Number G02B 6/26
PCT International Application Number PCT/JP04/11166
PCT International Filing date 2004-08-04
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2003-286118 2003-08-04 Japan
2 2003-286118 2003-12-24 Japan