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Yasunari Kawabata
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Tokyo, JP
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last 30 patents
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Patent Grant
Flexible optical waveguide device and process for the production th...
Patent number
6,091,874
Issue date
Jul 18, 2000
Tomoegawa Paper Co., Ltd.
Kensaku Higashi
G02 - OPTICS
Information
Patent Grant
Optical waveguide device for connections without optical axis adjus...
Patent number
6,052,500
Issue date
Apr 18, 2000
Mitsubishi Gas Chemical Company, Inc.
Toshihiro Takano
G02 - OPTICS
Information
Patent Grant
Optical signal distributors
Patent number
5,970,191
Issue date
Oct 19, 1999
Mitsubishi Gas Chemical Co., Inc.
Michio Oba
G02 - OPTICS
Information
Patent Grant
Optical waveguide module having main-line waveguide and branch wave...
Patent number
5,923,800
Issue date
Jul 13, 1999
Mitsubishi Gas Chemical Company, Inc.
Toshihiko Takano
G02 - OPTICS
Information
Patent Grant
Method for manufacturing optical element
Patent number
5,916,402
Issue date
Jun 29, 1999
Mitsubishi Gas Chemical Company, Inc.
Toshihiko Takano
B32 - LAYERED PRODUCTS
Information
Patent Grant
Curved optical waveguide and method of manufacturing the same
Patent number
5,872,883
Issue date
Feb 16, 1999
Mitsubishi Gas Chemical Company, Inc.
Michio Ohba
G02 - OPTICS
Information
Patent Grant
Optical waveguide
Patent number
5,838,853
Issue date
Nov 17, 1998
Mitsubishi Gas Chemical Company, Inc.
Kuniaki Jinnai
G02 - OPTICS
Information
Patent Grant
Design and manufacture of an optimized waveguide-type multiple bran...
Patent number
5,570,442
Issue date
Oct 29, 1996
Mitsubishi Gas Chemical Company, Inc.
Mitsuzo Arii
G02 - OPTICS
Information
Patent Grant
Interconnectable multi-terminal star coupler
Patent number
5,343,545
Issue date
Aug 30, 1994
Fuji Xerox Co., Ltd.
Takeshi Ota
G02 - OPTICS
Information
Patent Grant
Optical divider for multimode optical fiber systems
Patent number
5,058,978
Issue date
Oct 22, 1991
Mitsubishi Gas Chemical Co., Inc.
Osamu Kondoh
G02 - OPTICS