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Kohichi Ohshima
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Mishima-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus
Patent number
8,543,037
Issue date
Sep 24, 2013
Ricoh Company, Ltd.
Kazuhiro Egawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoreceptor, image forming apparatus and proc...
Patent number
8,420,284
Issue date
Apr 16, 2013
Ricoh Company, Ltd.
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image bearing member and image forming method using thereof, and im...
Patent number
7,862,969
Issue date
Jan 4, 2011
Ricoh Company, Ltd.
Yasuo Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method, and image forming apparatus and process cartr...
Patent number
7,662,533
Issue date
Feb 16, 2010
Ricoh Company Limited
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge, image forming apparatus, and image forming process
Patent number
7,550,238
Issue date
Jun 23, 2009
Ricoh Company, Ltd.
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge
Patent number
7,517,625
Issue date
Apr 14, 2009
Ricoh Company, Ltd.
Yasuo Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus using a contact or a proximity type of char...
Patent number
7,383,013
Issue date
Jun 3, 2008
Ricoh Company, Ltd.
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and process cartridge
Patent number
7,295,788
Issue date
Nov 13, 2007
Ricoh Company, Ltd.
Hiroshi Nakai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus using a contact or a proximity type of char...
Patent number
7,251,438
Issue date
Jul 31, 2007
Ricoh Company, Ltd.
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation apparatus having a body to be charged with specifie...
Patent number
7,251,437
Issue date
Jul 31, 2007
Ricoh Company, Ltd.
Nozomu Tamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus using a contact or a proximity type of char...
Patent number
7,103,301
Issue date
Sep 5, 2006
Ricoh Company, Ltd.
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Heat-sensitive stencil, process of fabricating same and method of p...
Patent number
6,092,461
Issue date
Jul 25, 2000
Ricoh Company, Ltd.
Tetsuo Tanaka
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Heat-sensitive stencil, process of fabricating same and method of p...
Patent number
6,050,183
Issue date
Apr 18, 2000
Ricoh Company, Ltd.
Tetsuo Tanaka
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,008,172
Issue date
Apr 16, 1991
Ricoh Company, Ltd.
Takashi Rokutanzono
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method of making an electrophotographic inorganic photosensitive el...
Patent number
4,908,292
Issue date
Mar 13, 1990
Ricoh Company, Ltd.
Yukio Ide
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Electrophotographic photoconductor having a photosensitive layer of...
Patent number
4,687,723
Issue date
Aug 18, 1987
Ricoh Company, Ltd.
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS AND PROC...
Publication number
20100172670
Publication date
Jul 8, 2010
RICOH COMPANY, LTD.
Kohichi OHSHIMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20100124712
Publication date
May 20, 2010
RICOH COMPANY, LTD.
Kazuhiro EGAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS USING A CONTACT OR A PROXIMITY TYPE OF CHAR...
Publication number
20070242992
Publication date
Oct 18, 2007
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE BEARING MEMBER AND IMAGE FORMING METHOD USING THEREOF, AND IM...
Publication number
20070212625
Publication date
Sep 13, 2007
Yasuo Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus using a contact or a proximity type of char...
Publication number
20060204259
Publication date
Sep 14, 2006
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method, and image forming apparatus and process cartr...
Publication number
20060093955
Publication date
May 4, 2006
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming process, image forming apparatus, and process cartridge
Publication number
20060068308
Publication date
Mar 30, 2006
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge
Publication number
20060051689
Publication date
Mar 9, 2006
Yasuo Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method, image forming apparatus and process cartridge...
Publication number
20060014096
Publication date
Jan 19, 2006
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method, and image forming apparatus and process cartr...
Publication number
20050287465
Publication date
Dec 29, 2005
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and process cartridge
Publication number
20050244176
Publication date
Nov 3, 2005
Hiroshi Nakai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Process cartridge, image forming apparatus, and image forming process
Publication number
20050238987
Publication date
Oct 27, 2005
Kohichi Ohshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image formation apparatus and process cartridge for image formation...
Publication number
20050196193
Publication date
Sep 8, 2005
Nozomu Tamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus using a contact or a proximity type of char...
Publication number
20040213600
Publication date
Oct 28, 2004
Kazuhiko Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY