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Kangawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Dispersion compensating optical fiber, dispersion compensating devi...
Patent number
7,194,171
Issue date
Mar 20, 2007
Sumitomo Electric Industries, Ltd.
Masao Tsukitani
G02 - OPTICS
Information
Patent Grant
Optical fiber preform producing method, optical fiber production me...
Patent number
7,068,901
Issue date
Jun 27, 2006
Sumitomo Electric Industries, Ltd.
Masaaki Hirano
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Manufacturing method of optical fiber preform
Patent number
7,062,941
Issue date
Jun 20, 2006
Sumitomo Electric Industries, Ltd.
Masashi Onishi
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical fiber manufacturing method and optical fiber
Patent number
7,010,203
Issue date
Mar 7, 2006
Sumitomo Electric Industries, Ltd.
Tomoyuki Yokokawa
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for manufacturing glass tube
Patent number
6,997,016
Issue date
Feb 14, 2006
Sumitomo Electric Industries, Ltd.
Tomomi Moriya
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Dispersion-compensating optical fiber and optical transmission line
Patent number
6,898,361
Issue date
May 24, 2005
Sumitomo Electric Industries, Ltd.
Eiji Yanada
G02 - OPTICS
Information
Patent Grant
Optical fiber preform, production method thereof, and optical fiber...
Patent number
6,836,605
Issue date
Dec 28, 2004
Sumitomo Electric Industries, Ltd.
Masaaki Hirano
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Dispersion compensating optical fiber and optical transmission line
Patent number
6,466,721
Issue date
Oct 15, 2002
Sumitomo Electric Industries, Ltd.
Masao Tsukitani
G02 - OPTICS
Information
Patent Grant
Optical fiber
Patent number
6,427,044
Issue date
Jul 30, 2002
Sumitomo Electric Industries, Ltd.
Eiji Yanada
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Optical fiber preform producing method, optical fiber production me...
Publication number
20040247269
Publication date
Dec 9, 2004
Masaaki Hirano
G02 - OPTICS
Information
Patent Application
Method and apparatus for manufacturing glass tube
Publication number
20040231361
Publication date
Nov 25, 2004
Sumitomo Electric Industries, Ltd.
Tomomi Moriya
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Optical fiber manufactring method and optical fiber
Publication number
20040170365
Publication date
Sep 2, 2004
Tomoyuki Yokokawa
G02 - OPTICS
Information
Patent Application
Method and device for manufacturing glass tube
Publication number
20040129030
Publication date
Jul 8, 2004
Haruyoshi Tanada
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Dispersion-compensating optical fiber and optical transmission line
Publication number
20040005129
Publication date
Jan 8, 2004
Eiji Yanada
G02 - OPTICS
Information
Patent Application
Dispersion compensating optical fiber, dispersion compensating devi...
Publication number
20030156809
Publication date
Aug 21, 2003
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Masao Tsukitani
G02 - OPTICS
Information
Patent Application
Optical fiber preform, production method thereof, and optical fiber...
Publication number
20030145630
Publication date
Aug 7, 2003
Masaaki Hirano
G02 - OPTICS
Information
Patent Application
Dispersion compensating optical fiber and optical transmission line
Publication number
20030086671
Publication date
May 8, 2003
Masao Tsukitani
G02 - OPTICS
Information
Patent Application
Manufacturing method of optical fiber preform
Publication number
20020174689
Publication date
Nov 28, 2002
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Masashi Onishi
C03 - GLASS MINERAL OR SLAG WOOL