Tadahiko Yamaoka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Instant photocopying apparatus
- Patent number 5,367,357
- Issue date Nov 22, 1994
- Seikosha Co., Ltd.
- Hiroshi Sudo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Instant photocopying apparatus
- Patent number 5,164,763
- Issue date Nov 17, 1992
- Seikosha Co., Ltd.
- Fujita Masanori
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Projection type liquid crystal displaying device
- Patent number 4,936,658
- Issue date Jun 26, 1990
- Seikosha Co., Ltd.
- Sakae Tanaka
- G02 - OPTICS
Information Patent Grant
Projection type liquid crystal displaying device
- Patent number 4,861,142
- Issue date Aug 29, 1989
- Seikosha Co., Ltd.
- Sakae Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Projection type liquid crystal displaying device
- Patent number 4,796,978
- Issue date Jan 10, 1989
- Seikosha Co., Ltd.
- Sakae Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY