Atsushi Ohta

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Developer-controlling member, manufacturing method thereof, develop...
- Patent number 8,019,257
- Issue date Sep 13, 2011
- Ricoh Company, Ltd.
- Kazuo Ishida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development roller
- Patent number 6,287,246
- Issue date Sep 11, 2001
- Ricoh Company, Ltd.
- Takayuki Yoshii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner carrier and method of producing the same
- Patent number 5,783,288
- Issue date Jul 21, 1998
- Ricoh Company, Ltd.
- Takashi Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,543,902
- Issue date Aug 6, 1996
- Ricoh Company, Ltd.
- Fuchio Takeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner carrier and method of producing the same
- Patent number 5,456,782
- Issue date Oct 10, 1995
- Ricoh Company, Ltd.
- Takashi Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Developer-Controlling Member, Manufacturing Method Thereof, Develop...
- Publication number 20080069597
- Publication date Mar 20, 2008
- Kazuo Ishida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY