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last 30 patents
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Patent Grant
Image removing method, image removing device, and image forming app...
Patent number
7,386,266
Issue date
Jun 10, 2008
Ricoh Company Limited
Masashi Nagayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and image forming method and process cartridge for image form...
Patent number
7,235,338
Issue date
Jun 26, 2007
Ricoh Company, Ltd.
Takeshi Takada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography, and image fixing process, image formi...
Patent number
7,217,485
Issue date
May 15, 2007
Ricoh Company, Ltd.
Kumi Hasegawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for forming image, method for developing electrostatic latent...
Patent number
7,163,774
Issue date
Jan 16, 2007
Ricoh Company Limited
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image-forming color toner, developing agent, image-forming apparatu...
Patent number
7,132,210
Issue date
Nov 7, 2006
Ricoh Company, Ltd.
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for development of electrostatic latent images, method of for...
Patent number
7,122,286
Issue date
Oct 17, 2006
Ricoh Company, Ltd.
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image removing method, image removing device, and image forming app...
Patent number
7,060,407
Issue date
Jun 13, 2006
Ricoh Company, Limited
Masashi Nagayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner for developing electrostatic images, toner container co...
Patent number
7,052,815
Issue date
May 30, 2006
Ricoh Company, Limited
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner, method for manufacturing the toner, and image forming...
Patent number
7,049,037
Issue date
May 23, 2006
Ricoh Company, Ltd.
Kohki Katoh
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Charge control agent, toner using same developer containing the ton...
Patent number
6,977,129
Issue date
Dec 20, 2005
Ricoh Company, Ltd.
Takuya Saito
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Image-forming color toner, developing agent, image-forming apparatu...
Patent number
6,939,653
Issue date
Sep 6, 2005
Ricoh Company, Ltd.
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic latent image, developing method...
Patent number
6,858,365
Issue date
Feb 22, 2005
Ricoh Company, Ltd.
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner, method for manufacturing the toner, and image forming...
Patent number
6,852,459
Issue date
Feb 8, 2005
Ricoh Company, Ltd.
Kohki Katoh
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Charge control agent and toner using same
Patent number
6,830,859
Issue date
Dec 14, 2004
Ricoh Company, Ltd.
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic latent image, toner cartridge, i...
Patent number
6,821,698
Issue date
Nov 23, 2004
Ricoh Company, Ltd.
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier and two-component developer for electrophotography
Patent number
6,740,461
Issue date
May 25, 2004
Ricoh Company, Ltd.
Masahide Yamashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic latent image and image forming m...
Patent number
6,716,561
Issue date
Apr 6, 2004
Ricoh Company, Ltd.
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing latent electrostatic images, and image forming...
Patent number
6,653,037
Issue date
Nov 25, 2003
Ricoh Company, Ltd.
Toyoshi Sawada
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Toner for developing electrostatic latent image, toner container co...
Patent number
6,566,026
Issue date
May 20, 2003
Ricoh Company, Ltd.
Yohichiroh Watanabe
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
Multi-color toner set and method of forming multi-color images, usi...
Patent number
6,180,298
Issue date
Jan 30, 2001
Ricoh Company, Ltd.
Noboru Kuroda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color toner for electrophotography
Patent number
6,103,441
Issue date
Aug 15, 2000
Ricoh Company, Ltd.
Masami Tomita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic latent image
Patent number
6,074,795
Issue date
Jun 13, 2000
Ricoh Company, Ltd.
Yohichiroh Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polymer particles, method of producing the same, and toner for use...
Patent number
5,576,393
Issue date
Nov 19, 1996
Ricoh Company, Ltd.
Hiroshi Yamashita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polymer particles and toner for electrophotography using the polyme...
Patent number
5,541,031
Issue date
Jul 30, 1996
Ricoh Company, Ltd.
Hiroshi Yamashita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Image-forming color toner, developing agent, image-forming apparatu...
Publication number
20060222987
Publication date
Oct 5, 2006
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image removing method, image removing device, and image forming app...
Publication number
20060127152
Publication date
Jun 15, 2006
Masashi Nagayama
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
Color toner for developing electrostatic images, toner container co...
Publication number
20050277046
Publication date
Dec 15, 2005
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image-forming color toner, developing agent, image-forming apparatu...
Publication number
20050238982
Publication date
Oct 27, 2005
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner and image forming method and process cartridge for image form...
Publication number
20050008961
Publication date
Jan 13, 2005
Takeshi Takada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Color toner, method for manufacturing the toner, and image forming...
Publication number
20050008962
Publication date
Jan 13, 2005
Kohki Katoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for electrophotography, and image fixing process, image formi...
Publication number
20040234879
Publication date
Nov 25, 2004
Kumi Hasegawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for forming image, method for developing electrostatic latent...
Publication number
20040157147
Publication date
Aug 12, 2004
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image removing method, image removing device, and image forming app...
Publication number
20040121254
Publication date
Jun 24, 2004
Masashi Nagayama
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Application
Color toner for developing electrostatic images, toner container co...
Publication number
20030219670
Publication date
Nov 27, 2003
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Carrier and two-component developer for electrophotography
Publication number
20030165765
Publication date
Sep 4, 2003
Masahide Yamashita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image-forming color toner, developing agent, image-forming apparatu...
Publication number
20030165759
Publication date
Sep 4, 2003
RICOH COMPANY, LTD.
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charge control agent, toner using same developer containing the ton...
Publication number
20030162018
Publication date
Aug 28, 2003
Takuya Saito
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic latent image, toner cartridge, i...
Publication number
20030129518
Publication date
Jul 10, 2003
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Color toner, method for manufacturing the toner, and image forming...
Publication number
20030096183
Publication date
May 22, 2003
Kohki Katoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Charge control agent and toner using same
Publication number
20030077534
Publication date
Apr 24, 2003
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic latent image, developing method...
Publication number
20030039909
Publication date
Feb 27, 2003
Toyoshi Sawada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for development of electrostatic latent images, method of for...
Publication number
20030036010
Publication date
Feb 20, 2003
Masanori Suzuki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing electrostatic latent image and image forming m...
Publication number
20020136975
Publication date
Sep 26, 2002
Keiko Shiraishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner for developing latent electrostatic images, and image forming...
Publication number
20020132177
Publication date
Sep 19, 2002
Toyoshi Sawada
B82 - NANO-TECHNOLOGY
Information
Patent Application
Toner for developing electrostatic latent image, toner container co...
Publication number
20020037467
Publication date
Mar 28, 2002
Yohichiroh Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY