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Makoto Ohsaki
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Yokohama, JP
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last 30 patents
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Patent Grant
Methods and systems for cleaning residual toner from image developi...
Patent number
6,125,257
Issue date
Sep 26, 2000
Ricoh Co., Ltd.
Takeyoshi Sekine
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
5,761,594
Issue date
Jun 2, 1998
Ricoh Company, Ltd.
Mitsuru Seto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Methods and systems for cleaning residual toner from image-developi...
Patent number
5,648,842
Issue date
Jul 15, 1997
Ricoh Company, Ltd.
Takeyoshi Sekine
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with transfer medium and electrometer posit...
Patent number
5,278,613
Issue date
Jan 11, 1994
Ricoh Company, Ltd.
Takashi Bisaiji
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a separate black developer stored fo...
Patent number
5,160,969
Issue date
Nov 3, 1992
Ricoh Company, Ltd.
Kenichi Mizuma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY