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Yoji Ishii
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Kanagawa, JP
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last 30 patents
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Patent Grant
Information recording or information recording/reproducing device
Patent number
6,438,076
Issue date
Aug 20, 2002
Sony Corporation
Kenji Kasahara
G11 - INFORMATION STORAGE
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Patent Grant
Optical pickup device for recordable disc and dichroic mirror
Patent number
5,260,927
Issue date
Nov 9, 1993
Sony Corporation
Teruaki Higashihara
G02 - OPTICS