Tomonari Hokkyo

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Patents Grantslast 30 patents

Information Patent Grant
Developing toner for electrophotography and electro-photographic de...
- Patent number 7,813,674
- Issue date Oct 12, 2010
- Ricoh Company, Ltd.
- Junji Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming system having charge balancing system
- Patent number 7,689,153
- Issue date Mar 30, 2010
- Ricoh Company, Ltd.
- Tsutomu Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,570,904
- Issue date Aug 4, 2009
- Ricoh Printing Systems, Ltd.
- Shigenori Yaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic toner and image forming apparatus
- Patent number 7,435,519
- Issue date Oct 14, 2008
- Ricoh Printing Systems, Ltd.
- Shigenori Yaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic recording apparatus
- Patent number 6,157,798
- Issue date Dec 5, 2000
- Hitachi Koki Co., Ltd.
- Tsuneaki Kawanishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic apparatus
- Patent number 5,923,933
- Issue date Jul 13, 1999
- Hitachi Koki Co., Ltd.
- Masayasu Anzai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Image forming apparatus
- Publication number 20090180810
- Publication date Jul 16, 2009
- RICOH COMPANY, LTD.
- Shigenori Yaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming system
- Publication number 20050271431
- Publication date Dec 8, 2005
- Ricoh Printing Systems, Ltd.
- Tsutomu Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20050271428
- Publication date Dec 8, 2005
- Ricoh Printing Systems, Ltd.
- Shigenori Yaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic toner and image forming apparatus
- Publication number 20050164110
- Publication date Jul 28, 2005
- Shigenori Yaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing toner for electrophotography and electro-photographic de...
- Publication number 20050158645
- Publication date Jul 21, 2005
- Ricoh Printing Systems, Ltd.
- Junji Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY