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Tooru Numata
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Chigasaki, JP
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last 30 patents
Information
Patent Grant
Information processing system
Patent number
5,436,639
Issue date
Jul 25, 1995
Hitachi, Ltd.
Toshifumi Arai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Temperature compensating lens system for projection television
Patent number
5,272,540
Issue date
Dec 21, 1993
Hitachi, Ltd.
Koji Hirata
G02 - OPTICS
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Patent Grant
Video projector with optical color balance
Patent number
5,200,814
Issue date
Apr 6, 1993
Hitachi, Ltd.
Koji Hirata
G02 - OPTICS
Information
Patent Grant
Optical system for projection type image display device
Patent number
5,103,302
Issue date
Apr 7, 1992
Hitachi, Ltd.
Takahiko Yoshida
H04 - ELECTRIC COMMUNICATION TECHNIQUE