Isao Yoshizaki

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Rear-projection screen and a rear projection image display employin...
- Patent number 5,513,037
- Issue date Apr 30, 1996
- 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
Rear-projection screen and a rear projection image display employin...
- Patent number 5,400,114
- Issue date Mar 21, 1995
- Hitachi, Ltd.
- Takahiko Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Projection lens system for projection type television
- Patent number 5,255,122
- Issue date Oct 19, 1993
- Hitachi, Ltd.
- Nobuhiro Konuma
- 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
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
Information Patent Grant
Rear projection screen and method of producing the same
- Patent number 5,066,099
- Issue date Nov 19, 1991
- Hitachi, Ltd.
- Takahoko Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Projection lens system
- Patent number 4,948,237
- Issue date Aug 14, 1990
- Hitachi, Ltd.
- Koji Hirata
- G02 - OPTICS
Information Patent Grant
Coupling system for image projection
- Patent number 4,729,031
- Issue date Mar 1, 1988
- Hitachi, Ltd.
- Shobu Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Isao Yoshizaki

Person

Patents Grantslast 30 patents

Rear-projection screen and a rear projection image display employin...

Ultra-wide angle liquid crystal projector system

Rear-projection screen and a rear projection image display employin...

Temperature compensating lens system for projection television

Projection lens system for projection type television

Video projector with optical color balance

Optical system for projection type image display device

Rear projection screen and method of producing the same

Projection lens system

Coupling system for image projection