Yoshihiko Shimura

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Ichikawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Range finder
- Patent number 5,631,458
- Issue date May 20, 1997
- Ricoh Company, Ltd.
- Toshiaki Nakahira
- G02 - OPTICS
Information Patent Grant
Flash control based on calculated required flash energy
- Patent number 5,148,212
- Issue date Sep 15, 1992
- Ricoh Company, Ltd.
- Yoshio Serikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY