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Tomonori Yabuta
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Yokohama, JP
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last 30 patents
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Patent Grant
Color image forming apparatus and method of obtaining color images...
Patent number
6,282,396
Issue date
Aug 28, 2001
Ricoh Company, Ltd.
Nobuo Iwata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image forming apparatus with polygonal mirror rotation phase...
Patent number
6,184,910
Issue date
Feb 6, 2001
Ricoh Company, Ltd.
Eiichi Sasaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Color image forming apparatus and method of obtaining color images...
Patent number
6,128,459
Issue date
Oct 3, 2000
Ricoh Company, Ltd.
Nobuo Iwata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus for detecting rotational speed
Patent number
5,962,783
Issue date
Oct 5, 1999
Ricoh Company, Ltd.
Nobuo Iwata
G01 - MEASURING TESTING
Information
Patent Grant
Deflecting mirror adjusting device for an image forming apparatus
Patent number
5,963,240
Issue date
Oct 5, 1999
Ricoh Company, Ltd.
Tadashi Shinohara
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Registration control for an image forming apparatus having an inter...
Patent number
5,828,926
Issue date
Oct 27, 1998
Ricoh Company, Ltd.
Nobuo Iwata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus which prevents adverse affects from heating...
Patent number
5,799,228
Issue date
Aug 25, 1998
Ricoh Company, Ltd.
Nobuo Iwata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Paper conveyer of image forming apparatus which conveys paper to a...
Patent number
5,678,161
Issue date
Oct 14, 1997
Ricoh Company, Ltd.
Shigeo Kurotaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY