Kiyoshi Wada

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rear projection type image display apparatus
- Patent number 5,808,704
- Issue date Sep 15, 1998
- Hitachi, Ltd.
- Hiroki Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rear projection type image display apparatus and transmission type...
- Patent number 5,613,748
- Issue date Mar 25, 1997
- Hitachi, Ltd.
- Takahiko Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rear projection type image display apparatus and transmission type...
- Patent number 5,590,943
- Issue date Jan 7, 1997
- Hitachi, Ltd.
- Takahiko Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ultra-wide angle liquid crystal projector system
- Patent number 5,500,747
- Issue date Mar 19, 1996
- Hitachi, Ltd.
- Hideo Tanide
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Information Patent Grant
Video projector with optical color balance
- Patent number 5,200,814
- Issue date Apr 6, 1993
- Hitachi, Ltd.
- Koji Hirata
- G02 - OPTICS