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Yutaka Takeda
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Ohme, JP
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last 30 patents
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Patent Grant
Process for producing a pattern with negative-type photosensitive c...
Patent number
4,801,519
Issue date
Jan 31, 1989
Hitachi Chemical Company Ltd.
Shigeru Koibuchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Semiconductor laser device including an arrangement for preventing...
Patent number
4,366,569
Issue date
Dec 28, 1982
Hitachi, Ltd.
Motohisa Hirao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting semiconductor device
Patent number
4,270,134
Issue date
May 26, 1981
Hitachi, Ltd.
Yutaka Takeda
G02 - OPTICS
Information
Patent Grant
Semiconductor laser
Patent number
4,161,701
Issue date
Jul 17, 1979
Hitachi, Ltd.
Yutaka Takeda
H01 - BASIC ELECTRIC ELEMENTS