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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus, lubricant applying device, transfer device...
Patent number
7,826,786
Issue date
Nov 2, 2010
Ricoh Company, Limited
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lubricant applicator, and image forming apparatus and process cartr...
Patent number
7,542,712
Issue date
Jun 2, 2009
Ricoh Company Limited
Shuji Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and toner
Patent number
7,539,451
Issue date
May 26, 2009
Ricoh Company Ltd.
Masanori Kawasumi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device, process cartridge and image forming apparatus
Patent number
7,493,075
Issue date
Feb 17, 2009
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge having a detachable u...
Patent number
7,430,377
Issue date
Sep 30, 2008
Ricoh Company, Limited
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge with a cleaner for re...
Patent number
7,400,844
Issue date
Jul 15, 2008
Ricoh Company Limited
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging apparatus, and toner and process cartridge used in the imag...
Patent number
7,386,257
Issue date
Jun 10, 2008
Ricoh Company, Ltd.
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a temporary toner holding device and...
Patent number
7,295,796
Issue date
Nov 13, 2007
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit and image forming apparatus having multiple cleaning...
Patent number
7,272,354
Issue date
Sep 18, 2007
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,266,324
Issue date
Sep 4, 2007
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning device for cleaning a surface of an image support body
Patent number
7,228,099
Issue date
Jun 5, 2007
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,218,877
Issue date
May 15, 2007
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, image forming apparatus, and toner
Patent number
7,149,465
Issue date
Dec 12, 2006
Ricoh Company, Limited
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,139,504
Issue date
Nov 21, 2006
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of removing residual...
Patent number
7,130,564
Issue date
Oct 31, 2006
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, and image forming apparatus
Patent number
7,110,696
Issue date
Sep 19, 2006
Ricoh Company, Ltd.
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, and image forming apparatus
Patent number
7,085,528
Issue date
Aug 1, 2006
Ricoh Company, Ltd.
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cleaning unit, process cartridge, image forming apparatus, and toner
Patent number
7,065,316
Issue date
Jun 20, 2006
Ricoh Company, Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, and process cartridge and image forming apparatus...
Patent number
7,062,194
Issue date
Jun 13, 2006
Ricoh Company Limited
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging apparatus, and toner and process cartridge used in the imag...
Patent number
7,050,741
Issue date
May 23, 2006
Ricoh Company, Ltd.
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,947,696
Issue date
Sep 20, 2005
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including an image carrier driving mechanism
Patent number
6,801,737
Issue date
Oct 5, 2004
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,665,512
Issue date
Dec 16, 2003
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member rotation control device, and image forming app...
Patent number
6,539,189
Issue date
Mar 25, 2003
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having an improved cleaning mechanism and m...
Patent number
6,032,006
Issue date
Feb 29, 2000
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image processing device which transfers scanned sheets to a printin...
Patent number
6,023,342
Issue date
Feb 8, 2000
Ricoh Company, Ltd.
Masato Yanagida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of cleaning a surface in an image forming apparatus by feedi...
Patent number
5,970,282
Issue date
Oct 19, 1999
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having a cleaning blade for removing deposi...
Patent number
5,881,339
Issue date
Mar 9, 1999
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
System for making examination papers and having an automatic markin...
Patent number
5,775,918
Issue date
Jul 7, 1998
Ricoh Company, Ltd.
Masato Yanagida
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Sheet separator for an image forming apparatus
Patent number
5,600,428
Issue date
Feb 4, 1997
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Powder transport unit having enhanced transportability and operabil...
Publication number
20080013998
Publication date
Jan 17, 2008
Naohiro Kumagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus, lubricant applying device, transfer device...
Publication number
20070183824
Publication date
Aug 9, 2007
Takeo Suda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CLEANING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND TONER
Publication number
20070154246
Publication date
Jul 5, 2007
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Lubricant applicator, and image forming apparatus and process cartr...
Publication number
20070059067
Publication date
Mar 15, 2007
Shuji Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20070036595
Publication date
Feb 15, 2007
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20070014588
Publication date
Jan 18, 2007
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20060216085
Publication date
Sep 28, 2006
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Imaging apparatus, and toner and process cartridge used in the imag...
Publication number
20060177239
Publication date
Aug 10, 2006
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20060165431
Publication date
Jul 27, 2006
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and toner
Publication number
20060062594
Publication date
Mar 23, 2006
Masanori Kawasumi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Lubricant for electrophotography, lubricant applying unit, process...
Publication number
20050164108
Publication date
Jul 28, 2005
Eisaku Murakami
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Image forming apparatus, process cartridge, and toner
Publication number
20050084271
Publication date
Apr 21, 2005
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20050074264
Publication date
Apr 7, 2005
Ken Amemiya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for image forming capable of removing residual...
Publication number
20050036805
Publication date
Feb 17, 2005
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge
Publication number
20050025520
Publication date
Feb 3, 2005
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning device, process cartridge, image forming apparatus and toner
Publication number
20050002705
Publication date
Jan 6, 2005
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20040228648
Publication date
Nov 18, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charging device, and process cartridge and image forming apparatus...
Publication number
20040213597
Publication date
Oct 28, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Imaging apparatus, and toner and process cartridge used in the imag...
Publication number
20040202495
Publication date
Oct 14, 2004
Toshio Koike
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, and image forming apparatus
Publication number
20040170455
Publication date
Sep 2, 2004
Takeshi Shintani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20040141779
Publication date
Jul 22, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
Publication number
20040136763
Publication date
Jul 15, 2004
Eisaku Murakami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus
Publication number
20040081488
Publication date
Apr 29, 2004
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus including an image carrier driving mechanism
Publication number
20030161663
Publication date
Aug 28, 2003
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image bearing member rotation control device, and image forming app...
Publication number
20020034401
Publication date
Mar 21, 2002
Ricoh Company, Ltd.
Masato Yanagida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY