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Sakurako Okamoto
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Kanagawa, JP
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last 30 patents
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Patent Grant
Semiconductor light-emitting device
Patent number
5,740,193
Issue date
Apr 14, 1998
Sony Corporation
Hiroyuki Okuyama
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Semiconductor light-emitting device
Patent number
5,657,336
Issue date
Aug 12, 1997
Sony Corporation
Hiroyuki Okuyama
H01 - BASIC ELECTRIC ELEMENTS