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Tokuya Ohjimi
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Kawasaki-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming device
Patent number
8,849,142
Issue date
Sep 30, 2014
Ricoh Company, Ltd.
Hiroyuki Sugiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner replenishing device capable of effectively softening toner an...
Patent number
8,649,692
Issue date
Feb 11, 2014
Ricoh Company, Ltd.
Masaki Sukesako
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for image forming capable of effectively preve...
Patent number
7,477,856
Issue date
Jan 13, 2009
Ricoh Company, Ltd.
Takuzi Yoneda
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
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
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
Developing device using a two-ingredient type developer and image f...
Patent number
6,873,814
Issue date
Mar 29, 2005
Ricoh Company, Ltd.
Tokuya Ohjimi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device including magnetic member provided on toner-scatt...
Patent number
6,856,774
Issue date
Feb 15, 2005
Ricoh Company, Ltd.
Atsushi Sampe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing apparatus, image formation apparatus, and process cartridge
Patent number
6,687,474
Issue date
Feb 3, 2004
Ricoh Company, Ltd.
Masahiko Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for reducing adhesion of carrier to image bear...
Patent number
6,507,718
Issue date
Jan 14, 2003
Ricoh Company, Ltd.
Tokuya Ohjimi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and developing device with improved self to...
Patent number
6,337,957
Issue date
Jan 8, 2002
Ricoh Company, Ltd.
Shinji Tamaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
IMAGE FORMING DEVICE
Publication number
20120315060
Publication date
Dec 13, 2012
RICOH COMPANY, LTD.
Hiroyuki Sugiyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER REPLENISHING DEVICE CAPABLE OF EFFECTIVELY SOFTENING TONER AN...
Publication number
20120099878
Publication date
Apr 26, 2012
Masaki SUKESAKO
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
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
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
Developing device using a two-ingredient type developer and image f...
Publication number
20030108362
Publication date
Jun 12, 2003
Tokuya Ohjimi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing device for preventing toner scattering and carrier falli...
Publication number
20030099481
Publication date
May 29, 2003
Atsushi Sampe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developing apparatus, image formation apparatus, and process cartridge
Publication number
20030002884
Publication date
Jan 2, 2003
Masahiko Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus for reducing adhesion of carrier to image bear...
Publication number
20020051649
Publication date
May 2, 2002
Ricoh Company, Ltd.
Tokuya Ohjimi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY