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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image forming apparatus
Patent number
RE47726
Issue date
Nov 12, 2019
Ricoh Company, Ltd.
Shinji Aoki
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
10,088,781
Issue date
Oct 2, 2018
Ricoh Company, Ltd.
Shinya Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including a transfer bias output device
Patent number
9,658,579
Issue date
May 23, 2017
Ricoh Company, Ltd.
Keigo Nakamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
9,563,153
Issue date
Feb 7, 2017
Ricoh Company, Ltd.
Shinya Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device with transfer voltage unit and image forming appara...
Patent number
9,335,674
Issue date
May 10, 2016
Ricoh Company, Limited
Naomi Sugimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
9,310,722
Issue date
Apr 12, 2016
Ricoh Company, Limited
Shinya Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
9,285,723
Issue date
Mar 15, 2016
Ricoh Company, Ltd.
Naomi Sugimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device with transfer voltage unit and image forming appara...
Patent number
9,081,335
Issue date
Jul 14, 2015
Ricoh Company, Limited
Naomi Sugimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
9,020,382
Issue date
Apr 28, 2015
Ricoh Company, Ltd.
Shinji Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device, image forming apparatus, and transfer method
Patent number
8,923,716
Issue date
Dec 30, 2014
Ricoh Company, Limited
Keigo Nakamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
8,909,079
Issue date
Dec 9, 2014
Ricoh Company, Ltd.
Shinji Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device and image forming apparatus
Patent number
8,818,221
Issue date
Aug 26, 2014
Ricoh Company, Limited
Yasuhiko Ogino
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer device and image forming apparatus incorporating same
Patent number
8,781,348
Issue date
Jul 15, 2014
Ricoh Company, Ltd.
Yasuhiko Ogino
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus for obtaining good image quality over time
Patent number
8,750,736
Issue date
Jun 10, 2014
Ricoh Company, Ltd.
Keigo Nakamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
8,712,267
Issue date
Apr 29, 2014
Ricoh Company, Ltd.
Naomi Sugimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method and apparatus that detect an image density
Patent number
8,165,481
Issue date
Apr 24, 2012
Ricoh Company, Ltd.
Haruo Iimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method capable of generat...
Patent number
8,045,875
Issue date
Oct 25, 2011
Ricoh Company, Limited
Shinji Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming method
Patent number
7,662,530
Issue date
Feb 16, 2010
Ricoh Company, Ltd.
Haruo Iimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic toner and image forming method and apparatus us...
Patent number
6,284,424
Issue date
Sep 4, 2001
Ricoh Company, Ltd.
Haruo Iimura
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Organosilicon compound, producing method thereof and toner and dry-...
Patent number
5,595,852
Issue date
Jan 21, 1997
Ricoh Company, Ltd.
Masakatsu Shimoda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Phase plate and liquid crystal display using same
Patent number
5,472,635
Issue date
Dec 5, 1995
Nippon Oil Company, Ltd.
Shigeki Iida
G02 - OPTICS
Information
Patent Grant
Liquid crystal display device with improved viewing angle dependenc...
Patent number
5,380,459
Issue date
Jan 10, 1995
Ricoh Company, Ltd.
Akihiko Kanemoto
G02 - OPTICS
Information
Patent Grant
Liquid crystal color display device provided with a color filter fi...
Patent number
5,250,214
Issue date
Oct 5, 1993
Ricoh Company, Ltd.
Akihiko Kanemoto
G02 - OPTICS
Information
Patent Grant
DAP type liquid crystal device with cholesteric liquid crystal bire...
Patent number
5,243,451
Issue date
Sep 7, 1993
Ricoh Company, Ltd.
Akihiko Kanemoto
G02 - OPTICS
Information
Patent Grant
Super-twisted nematic type liquid crystal display device
Patent number
5,184,237
Issue date
Feb 2, 1993
Ricoh Company, Ltd.
Haruo Iimura
G02 - OPTICS
Information
Patent Grant
ECB type liquid crystal display device having birefringent layer wi...
Patent number
5,175,638
Issue date
Dec 29, 1992
Ricoh Company, Ltd.
Akihiko Kanemoto
G02 - OPTICS
Information
Patent Grant
Liquid crystal display element
Patent number
5,150,237
Issue date
Sep 22, 1992
Ricoh Company, Ltd.
Haruo Iimura
G02 - OPTICS
Information
Patent Grant
Liquid crystal display device with dielectric anisotropy
Patent number
5,056,896
Issue date
Oct 15, 1991
Ricoh Company, Ltd.
Haruo Iimura
G02 - OPTICS
Information
Patent Grant
Liquid crystal display device with a birefringent compensator
Patent number
5,016,988
Issue date
May 21, 1991
Ricoh Company, Ltd.
Haruo Iimura
G02 - OPTICS
Information
Patent Grant
Liquid crystal display device
Patent number
4,984,873
Issue date
Jan 15, 1991
Ricoh Company, Ltd.
Yasuyuki Takiguchi
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20170146931
Publication date
May 25, 2017
Shinya TANAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20150338792
Publication date
Nov 26, 2015
RICOH COMPANY, LTD.
Keigo NAKAMURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TRANSFER DEVICE WITH TRANSFER VOLTAGE UNIT AND IMAGE FORMING APPARA...
Publication number
20150286168
Publication date
Oct 8, 2015
Naomi SUGIMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20140169817
Publication date
Jun 19, 2014
Naomi SUGIMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20140010562
Publication date
Jan 9, 2014
Shinya Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20130148993
Publication date
Jun 13, 2013
Shinji Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Publication number
20120237234
Publication date
Sep 20, 2012
Naomi SUGIMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TRANSFER DEVICE AND IMAGE FORMING APPARATUS
Publication number
20120230715
Publication date
Sep 13, 2012
Yasuhiko OGINO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TRANSFER DEVICE, IMAGE FORMING APPARATUS, AND TRANSFER METHOD
Publication number
20120045259
Publication date
Feb 23, 2012
Keigo NAKAMURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS
Publication number
20120045237
Publication date
Feb 23, 2012
Shinji AOKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD CAPABLE OF GENERAT...
Publication number
20090123168
Publication date
May 14, 2009
Shinji Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY