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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming method and apparatus for transfer and fixing image wi...
Patent number
7,884,840
Issue date
Feb 8, 2011
Ricoh Co., Ltd.
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing unit and image forming apparatus including the same
Patent number
7,796,920
Issue date
Sep 14, 2010
Ricoh Company, Ltd.
Kenichi Taguma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device, a developing method, a process cartridge and an...
Patent number
7,593,671
Issue date
Sep 22, 2009
Ricoh Company, Ltd.
Emiko Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and an impurity collecting device associate...
Patent number
7,295,795
Issue date
Nov 13, 2007
Ricoh Company, Ltd.
Koji Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method, system and apparatus for transferring toner images to both...
Patent number
7,197,269
Issue date
Mar 27, 2007
Ricoh Company, Ltd.
Yasukuni Omata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device and image forming apparatus equipped with the same
Patent number
7,085,514
Issue date
Aug 1, 2006
Ricoh Company, Ltd.
Chiemi Kaneko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation method and image formation apparatus for same
Patent number
7,082,282
Issue date
Jul 25, 2006
Ricoh Company, Ltd.
Chiemi Kaneko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus for recording on two sides in a single pass
Patent number
7,054,587
Issue date
May 30, 2006
Ricoh Company, Ltd.
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus transferring toner images to both surfaces...
Patent number
7,039,349
Issue date
May 2, 2006
Ricoh Company, Ltd.
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method having transfer temperature difference and app...
Patent number
7,003,251
Issue date
Feb 21, 2006
Ricoh Company, Ltd.
Koji Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus configured for double sided printing
Patent number
6,983,117
Issue date
Jan 3, 2006
Ricoh Company, Ltd.
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for producing duplex prints and image forming...
Patent number
6,801,742
Issue date
Oct 5, 2004
Ricoh Company, Ltd.
Hideaki Mochimaru
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image transferring device for an image forming apparatus
Patent number
6,347,214
Issue date
Feb 12, 2002
Ricoh Company, Ltd.
Chiemi Kaneko
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Image forming apparatus with a transfer member having an inherent v...
Patent number
6,173,148
Issue date
Jan 9, 2001
Ricoh Company, Ltd.
Itaru Matsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
A DEVELOPING DEVICE, A DEVELOPING METHOD, A PROCESS CARTRIDGE AND A...
Publication number
20070127951
Publication date
Jun 7, 2007
Emiko Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
DEVELOPING UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME
Publication number
20070122202
Publication date
May 31, 2007
KENICHI TAGUMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method and apparatus for transfer and fixing image wi...
Publication number
20070014596
Publication date
Jan 18, 2007
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method having transfer temperature difference and app...
Publication number
20060024095
Publication date
Feb 2, 2006
Koji Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus for recording on two sides in a single pass
Publication number
20050031384
Publication date
Feb 10, 2005
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20040141776
Publication date
Jul 22, 2004
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image transferring device and image forming apparatus including the...
Publication number
20040131398
Publication date
Jul 8, 2004
Yasukuni Omata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20040101332
Publication date
May 27, 2004
Norimasa Sohmiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method and apparatus for the same
Publication number
20030235442
Publication date
Dec 25, 2003
Koji Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY