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Shizuoka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Black toner, image forming method and image forming apparatus using...
Patent number
7,090,955
Issue date
Aug 15, 2006
Ricoh Company, Ltd.
Hachiro Tosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Black toner, image forming method and image forming apparatus using...
Patent number
6,969,574
Issue date
Nov 29, 2005
Ricoh Company, Ltd.
Hachiro Tosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image formation method
Patent number
6,855,468
Issue date
Feb 15, 2005
Fujitsu Limited
Takashi Yamamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner, image forming method and apparatus using the toner, and cont...
Patent number
6,821,699
Issue date
Nov 23, 2004
Ricoh Company Limited
Tomio Kondou
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image formation process and developer used therein
Patent number
6,416,914
Issue date
Jul 9, 2002
Fujitsu Limited
Masae Nakamura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic image formation process and apparatus
Patent number
6,360,068
Issue date
Mar 19, 2002
Fujitsu Limited
Masakazu Kinoshita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method and dry toner therefor
Patent number
6,168,894
Issue date
Jan 2, 2001
Ricoh Company, Ltd.
Mitsuo Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
One-component magnetic toner for use in electrophotography
Patent number
5,527,657
Issue date
Jun 18, 1996
Ricoh Company, Ltd.
Fuchio Takeda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device of the type forming thin layer of toner on toner...
Patent number
5,164,774
Issue date
Nov 17, 1992
Ricoh Company, Ltd.
Masami Tomita
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic latent image
Patent number
4,762,763
Issue date
Aug 9, 1988
Ricoh Co., Ltd.
Yoshihiro Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic developer for developing latent electrostatic images
Patent number
4,670,368
Issue date
Jun 2, 1987
Ricoh Company, Ltd.
Hachiro Tosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrographic development process
Patent number
4,401,740
Issue date
Aug 30, 1983
Ricoh Company, Ltd.
Toshiyasu Kawabata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Black toner, image forming method and image forming apparatus using...
Publication number
20050238981
Publication date
Oct 27, 2005
Hachiro Tosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Toner, image forming method and apparatus using the toner, and cont...
Publication number
20030118932
Publication date
Jun 26, 2003
Tomio Kondou
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY