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Toshikazu Shibata
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Electrically insulating resin composition and a DC electric wire or...
Patent number
7,196,267
Issue date
Mar 27, 2007
Sumitomo Electric Industries, Inc.
Yoitsu Sekiguchi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Optical waveguide type grating element, production method thereof,...
Patent number
6,915,045
Issue date
Jul 5, 2005
Sumitomo Electric Industries, Ltd.
Ken Hashimoto
G02 - OPTICS
Information
Patent Grant
Optical device, optical module, optical amplifier, and optical tran...
Patent number
6,898,002
Issue date
May 24, 2005
Sumitomo Electric Industries, Ltd.
Masayuki Shigematsu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Diffraction grating device manufacturing method, diffraction gratin...
Patent number
6,804,437
Issue date
Oct 12, 2004
Sumitomo Electric Industries, Ltd.
Kiyotaka Murashima
G02 - OPTICS
Information
Patent Grant
Optical fiber and optical component including the same
Patent number
6,597,849
Issue date
Jul 22, 2003
Sumitomo Electric Industries, Ltd.
Shinji Ishikawa
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
Apparatus and method of manufacturing optical waveguide type diffra...
Publication number
20040252944
Publication date
Dec 16, 2004
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Ken Hashimoto
G02 - OPTICS
Information
Patent Application
Optical amplifier
Publication number
20040196882
Publication date
Oct 7, 2004
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Haruo Nakaji
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Diffraction grating device making method and apparatus
Publication number
20040161196
Publication date
Aug 19, 2004
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Kiyotaka Murashima
G02 - OPTICS
Information
Patent Application
Grating device, method of fabricating the same and optical communic...
Publication number
20040136653
Publication date
Jul 15, 2004
Kiyotaka Murashima
G02 - OPTICS
Information
Patent Application
Optical waveguide type grating element, production method thereof,...
Publication number
20040114864
Publication date
Jun 17, 2004
Ken Hashimoto
G02 - OPTICS
Information
Patent Application
Optical waveguide diffraction grating device, method for fabricatin...
Publication number
20040028330
Publication date
Feb 12, 2004
Toshikazu Shibata
G02 - OPTICS
Information
Patent Application
Diffraction grating device manufacturing method, diffraction gratin...
Publication number
20030165294
Publication date
Sep 4, 2003
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Kiyotaka Murashima
G02 - OPTICS
Information
Patent Application
Electrically insulating resin composition and electric wire or cabl...
Publication number
20030149176
Publication date
Aug 7, 2003
Yoitsu Sekiguchi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Optical component, Optical encoder, Optical decoder, and Optical co...
Publication number
20030077038
Publication date
Apr 24, 2003
Kiyotaka Murashima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical device, optical module, optical amplifier, and optical tran...
Publication number
20030053197
Publication date
Mar 20, 2003
Masayuki Shigematsu
G02 - OPTICS
Information
Patent Application
Optical fiber and optical component including the same
Publication number
20020025131
Publication date
Feb 28, 2002
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Shinji Ishikawa
C03 - GLASS MINERAL OR SLAG WOOL