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Koichiro Iwao
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Osaka, JP
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last 30 patents
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Patent Grant
Photosemiconductor and optical fiber welded module
Patent number
5,189,716
Issue date
Feb 23, 1993
Nippon Sheet Glass Co., Ltd.
Takahiro Matsubara
G02 - OPTICS
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Patent Grant
Photosemiconductor and optical fiber welded module
Patent number
5,119,462
Issue date
Jun 2, 1992
501 Nippon Sheet Glass Co., Ltd.
Takahiro Matsubara
G02 - OPTICS
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Patent Grant
Optical switch
Patent number
5,000,534
Issue date
Mar 19, 1991
Nippon Sheet Glass Co., Ltd.
Yasuyuki Watanabe
G02 - OPTICS