Shigeyuki Serizawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light source apparatus using a cone-shaped element and an applied a...
- Patent number 5,844,638
- Issue date Dec 1, 1998
- AG Technology Co., Ltd.
- Yoshiharu Ooi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Projection type color liquid crystal optical apparatus
- Patent number 5,754,260
- Issue date May 19, 1998
- AG Technology Co., Ltd.
- Yoshiharu Ooi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light source apparatus using a cone-like material and an applied ap...
- Patent number 5,659,409
- Issue date Aug 19, 1997
- AG Technology Co., Ltd.
- Yoshiharu Ooi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Projection type color liquid crystal optical apparatus
- Patent number 5,648,860
- Issue date Jul 15, 1997
- AG Technology Co., Ltd.
- Yoshiharu Ooi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE