Yohichiroh Miyaguchi

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus and image forming method using electrostati...
- Patent number 7,672,604
- Issue date Mar 2, 2010
- Ricoh Company, Ltd.
- Tomoko Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge and image forming apparatus mo...
- Patent number 7,526,238
- Issue date Apr 28, 2009
- Ricoh Company, Ltd.
- Masaaki Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner supplying system for an image forming apparatus
- Patent number 7,308,222
- Issue date Dec 11, 2007
- Ricoh Company, Ltd.
- Yoshinori Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 7,236,720
- Issue date Jun 26, 2007
- Ricoh Company, Ltd.
- Yasushi Nakazato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including electrostatic conveyance of charg...
- Patent number 6,597,884
- Issue date Jul 22, 2003
- Ricoh Company, Ltd.
- Yohichiroh Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Image forming apparatus and image forming method
- Publication number 20060251449
- Publication date Nov 9, 2006
- Tomoko Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Development device, process cartridge and image forming apparatus
- Publication number 20060216071
- Publication date Sep 28, 2006
- Masaaki Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus and process cartridge
- Publication number 20050158073
- Publication date Jul 21, 2005
- Yasushi Nakazato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20020037182
- Publication date Mar 28, 2002
- RICOH COMPANY, LTD.
- Yohichiroh Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY