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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus
Patent number
8,472,856
Issue date
Jun 25, 2013
Ricoh Company, Limited
Hiromichi Ninomiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
8,457,541
Issue date
Jun 4, 2013
Ricoh Company, Limited
Akio Kosuge
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lubricant applicator, image forming apparatus, and process cartridge
Patent number
8,380,115
Issue date
Feb 19, 2013
Ricoh Company, Limited
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge incorporating same, and image form...
Patent number
8,315,535
Issue date
Nov 20, 2012
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Waste toner conveying device and image forming apparatus
Patent number
8,010,034
Issue date
Aug 30, 2011
Ricoh Company, Ltd.
Yoshinori Ozawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus and method for replenishing a developing device with tone...
Patent number
7,289,748
Issue date
Oct 30, 2007
Ricoh Company, Ltd.
Takaaki Yanagisawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Apparatus and method for replenishing a developing device with tone...
Patent number
7,218,880
Issue date
May 15, 2007
Ricoh Company, Ltd.
Takaaki Yanagisawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Apparatus and method for replenishing a developing device with tone...
Patent number
6,748,190
Issue date
Jun 8, 2004
Ricoh Company, Ltd.
Takaaki Yanagisawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Developing apparatus including first and second agitating members i...
Patent number
6,603,943
Issue date
Aug 5, 2003
Ricoh Company, Ltd.
Kazuhiko Yuuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Apparatus and method for replenishing a developing device with tone...
Patent number
6,567,637
Issue date
May 20, 2003
Ricoh Company, Ltd.
Takaaki Yanagisawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Image forming apparatus having mixed toner consumption mode
Patent number
6,519,428
Issue date
Feb 11, 2003
Ricoh Company, Ltd.
Megumi Ohtoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image forming apparatus with toner recycling
Patent number
6,366,754
Issue date
Apr 2, 2002
Ricoh Company, Ltd.
Masumi Sato
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming apparatus capable of accurat...
Patent number
6,334,039
Issue date
Dec 25, 2001
Ricoh Company, Ltd.
Hiroshi Yoshinaga
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Image forming apparatus
Publication number
20110206432
Publication date
Aug 25, 2011
RICOH COMPANY, LIMITED
Hiromichi Ninomiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartriedge incorporating same, and image for...
Publication number
20100189461
Publication date
Jul 29, 2010
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Lubricant applicator, image forming apparatus, and process cartridge
Publication number
20100183349
Publication date
Jul 22, 2010
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20100129126
Publication date
May 27, 2010
Akio KOSUGE
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Waste toner conveying device and image forming apparatus
Publication number
20090232570
Publication date
Sep 17, 2009
Ricoh Company, Ltd.
Yoshinori OZAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Apparatus and method for replenishing a developing device with tone...
Publication number
20060099006
Publication date
May 11, 2006
Takaaki Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Apparatus and method for replenishing a developing device with tone...
Publication number
20040197120
Publication date
Oct 7, 2004
Takaaki Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Apparatus and method for replenishing a developing device with tone...
Publication number
20030198487
Publication date
Oct 23, 2003
Takaaki Yanagisawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing apparatus and image formation apparatus
Publication number
20020051657
Publication date
May 2, 2002
Kazuhiko Yuuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Apparatus and method for replenishing a developing device
Publication number
20010021326
Publication date
Sep 13, 2001
RICOH COMPANY, LTD.
Takaaki Yanagisawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC