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Patents Grants
last 30 patents
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Patent Grant
Toner, developer, toner container, process cartridge, image forming...
Patent number
8,211,605
Issue date
Jul 3, 2012
Ricoh Company, Ltd.
Hiroshi Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation method
Patent number
7,939,235
Issue date
May 10, 2011
Ricoh Company Limited
Takahiro Honda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method and toner for developing latent electrostatic...
Patent number
7,935,469
Issue date
May 3, 2011
Ricoh Company, Ltd.
Takahiro Honda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, image developer and image forming apparatus
Patent number
7,749,674
Issue date
Jul 6, 2010
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, image forming apparatus and image forming method
Patent number
7,642,032
Issue date
Jan 5, 2010
Ricoh Company, Limited
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
External additive for toner for electrophotography, toner for elect...
Patent number
7,611,815
Issue date
Nov 3, 2009
Ricoh Company, Ltd.
Hideki Sugiura
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Toner, developer, toner container, process cartridge, image forming...
Patent number
7,566,521
Issue date
Jul 28, 2009
Ricoh Company, Ltd.
Akihiro Kotsugai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, and developer, image developer and image forming apparatus u...
Patent number
7,547,497
Issue date
Jun 16, 2009
Ricoh Company, Ltd.
Osamu Uchinokura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, and, developer, toner container, process cartridge, image fo...
Patent number
7,521,164
Issue date
Apr 21, 2009
Ricoh Company, Ltd.
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, toner container, process cartridge, image forming...
Patent number
7,455,942
Issue date
Nov 25, 2008
Ricoh Company, Ltd.
Tsuneyasu Nagatomo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method using toner
Patent number
7,442,484
Issue date
Oct 28, 2008
Ricoh Company Limited
Osamu Uchinokura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, and, developer, toner container, process cartridge, image fo...
Patent number
7,374,851
Issue date
May 20, 2008
Ricoh Company, Ltd.
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic image, developer, image forming...
Patent number
7,368,212
Issue date
May 6, 2008
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and fixing device and image forming device using the same
Patent number
7,368,213
Issue date
May 6, 2008
Ricoh Company, Limited
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, toner container, process cartridge, image forming...
Patent number
7,318,989
Issue date
Jan 15, 2008
Ricoh Company, Ltd.
Akihiro Kotsugai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, image developer and image forming apparatus
Patent number
7,288,353
Issue date
Oct 30, 2007
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic images, developer, image forming...
Patent number
7,261,989
Issue date
Aug 28, 2007
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography and image forming apparatus
Patent number
7,258,959
Issue date
Aug 21, 2007
Ricoh Company, Ltd.
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography, and image forming process, process ca...
Patent number
7,172,844
Issue date
Feb 6, 2007
Ricoh Company, Ltd.
Kazuhiko Umemura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, developer, image forming apparatus, process cartridge and im...
Patent number
7,169,525
Issue date
Jan 30, 2007
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing a latent electrostatic image, developer using...
Patent number
7,169,522
Issue date
Jan 30, 2007
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic image, developer, process for fo...
Patent number
7,163,773
Issue date
Jan 16, 2007
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Dry toner for developing electrostatic images
Patent number
6,861,191
Issue date
Mar 1, 2005
Ricoh Company, Ltd.
Satoshi Mochizuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier for electrophotography and developer using the same
Patent number
6,828,075
Issue date
Dec 7, 2004
Ricoh Company, Ltd.
Kousuke Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrostatic image development and image forming method...
Patent number
6,818,369
Issue date
Nov 16, 2004
Ricoh Company, Ltd.
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negatively chargeable toner
Patent number
6,770,411
Issue date
Aug 3, 2004
Ricoh Company, Ltd.
Minoru Masuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier for electrophotographic developer, method for manufacturing...
Patent number
6,500,595
Issue date
Dec 31, 2002
Ricoh Company, Ltd.
Satoshi Mochizuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier for image developer for electrophotography
Patent number
6,406,826
Issue date
Jun 18, 2002
Ricoh Company, Ltd.
Kousuke Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Full-color toner image fixing method and apparatus
Patent number
6,363,229
Issue date
Mar 26, 2002
Ricoh Company, Ltd.
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic toner and image forming method using the toner
Patent number
6,303,258
Issue date
Oct 16, 2001
Ricoh Company, Ltd.
Kohki Katoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
TONER, AND, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FO...
Publication number
20080268366
Publication date
Oct 30, 2008
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING...
Publication number
20080233498
Publication date
Sep 25, 2008
Hiroshi Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMING METHOD AND TONER FOR DEVELOPING LATENT ELECTROSTATIC...
Publication number
20080227003
Publication date
Sep 18, 2008
Takahiro HONDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
IMAGE FORMATION METHOD
Publication number
20080227000
Publication date
Sep 18, 2008
Takahiro HONDA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING...
Publication number
20080014527
Publication date
Jan 17, 2008
Akihiro Kotsugai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER, DEVELOPER, IMAGE DEVELOPER AND IMAGE FORMING APPARATUS
Publication number
20070275318
Publication date
Nov 29, 2007
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, toner container, process cartridge, image forming...
Publication number
20070031748
Publication date
Feb 8, 2007
Akihiro Kotsugai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic images, developer, image forming...
Publication number
20060240351
Publication date
Oct 26, 2006
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, and, developer, toner container, process cartridge, image fo...
Publication number
20060204883
Publication date
Sep 14, 2006
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Electrophotography and image forming apparatus
Publication number
20060068313
Publication date
Mar 30, 2006
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, toner container, process cartridge, image forming...
Publication number
20060063081
Publication date
Mar 23, 2006
Tsuneyasu Nagatomo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, image forming apparatus, process cartridge and im...
Publication number
20060040194
Publication date
Feb 23, 2006
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner and toner cartridge
Publication number
20060029433
Publication date
Feb 9, 2006
Takuya Saito
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, and developer, image developer and image forming apparatus u...
Publication number
20050208408
Publication date
Sep 22, 2005
Osamu Uchinokura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner and fixing device and image forming device using the same
Publication number
20050208411
Publication date
Sep 22, 2005
Shinya Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, image developer and image forming apparatus
Publication number
20050191575
Publication date
Sep 1, 2005
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming method using toner
Publication number
20050089787
Publication date
Apr 28, 2005
Osamu Uchinokura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, image forming apparatus and image forming method
Publication number
20050089786
Publication date
Apr 28, 2005
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic image, developer, image forming...
Publication number
20050026064
Publication date
Feb 3, 2005
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for electrophotography, and image forming process, process ca...
Publication number
20040229143
Publication date
Nov 18, 2004
Kazuhiko Umemura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic image, developer, process for fo...
Publication number
20040115550
Publication date
Jun 17, 2004
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Developer for developing electrostatic image, image forming apparat...
Publication number
20040072091
Publication date
Apr 15, 2004
Satoshi Mochizuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
External additive for toner for electrophotography, toner for elect...
Publication number
20040067189
Publication date
Apr 8, 2004
Hideki Sugiura
B82 - NANO-TECHNOLOGY
Information
Patent Application
Toner for developing a latent electrostatic image, developer using...
Publication number
20030232266
Publication date
Dec 18, 2003
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Carrier for electrophotography and developer using the same
Publication number
20030186154
Publication date
Oct 2, 2003
Kousuke Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, developer, image-forming method and image-forming device
Publication number
20030152857
Publication date
Aug 14, 2003
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Negatively chargeable toner
Publication number
20020182526
Publication date
Dec 5, 2002
Minoru Masuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for electrostatic image developement and image forming method...
Publication number
20020160290
Publication date
Oct 31, 2002
Hideki Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Dry toner for developing electrostatic images
Publication number
20020155366
Publication date
Oct 24, 2002
Satoshi Mochizuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY