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Hideo Inuzuka
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Yokohama, JP
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last 30 patents
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Patent Grant
Disk drive unit with a dustproof cap attached to a body module to p...
Patent number
5,892,747
Issue date
Apr 6, 1999
Ricoh Company, Ltd.
Yasushi Okada
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge driving apparatus
Patent number
5,668,793
Issue date
Sep 16, 1997
Ricoh Company, Ltd.
Takashi Ogawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk apparatus
Patent number
5,086,422
Issue date
Feb 4, 1992
Ricoh Company, Ltd.
Toshimichi Hagiya
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pick-up device for both focus and error tracking detection
Patent number
4,687,916
Issue date
Aug 18, 1987
Ricoh Company, Ltd.
Masami Emoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Focus detection method involving cutting more than half of light be...
Patent number
4,684,799
Issue date
Aug 4, 1987
Ricoh Company, Ltd.
Masami Emoto
G02 - OPTICS
Information
Patent Grant
Optical pickup with a two-detector arrangement
Patent number
4,683,559
Issue date
Jul 28, 1987
Ricoh Company, Ltd.
Masami Emoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Color electrostatic copying machine
Patent number
4,162,843
Issue date
Jul 31, 1979
Ricoh Company, Ltd.
Satoru Inoue
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY