Tsutomu Yamakami

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Charging device, and process cartridge and image forming apparatus...
- Patent number 7,218,877
- Issue date May 15, 2007
- Ricoh Company Limited
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device, and process cartridge and image forming apparatus...
- Patent number 7,062,194
- Issue date Jun 13, 2006
- Ricoh Company Limited
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Copying paper processing apparatus
- Patent number 5,060,922
- Issue date Oct 29, 1991
- Ricoh Company, Ltd.
- Mitsuo Shibusawa
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER

Patents Applicationslast 30 patents

Information Patent Application
Charging device, and process cartridge and image forming apparatus...
- Publication number 20060165431
- Publication date Jul 27, 2006
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Charging device, and process cartridge and image forming apparatus...
- Publication number 20040228648
- Publication date Nov 18, 2004
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY