Kazumasa Ishikawa

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus
- Patent number 7,712,892
- Issue date May 11, 2010
- Ricoh Company, Ltd.
- Hajime Nishida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming device
- Patent number 7,505,714
- Issue date Mar 17, 2009
- Ricoh Company, Ltd.
- Shoji Asanuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Head cleaner and image forming apparatus
- Patent number 7,431,422
- Issue date Oct 7, 2008
- Ricoh Company, Ltd.
- Shoji Asanuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming apparatus
- Patent number 7,393,080
- Issue date Jul 1, 2008
- Ricoh Company, Ltd.
- Kazumasa Ishikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming apparatus with conveying part arranged to allow drying
- Patent number 7,367,667
- Issue date May 6, 2008
- Ricoh Company, Ltd.
- Taku Kudoh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Rolled paper feeding apparatus which provides a constant torque for...
- Patent number 5,884,860
- Issue date Mar 23, 1999
- Ricoh Company, Ltd.
- Kazumasa Ishikawa
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20100149299
- Publication date Jun 17, 2010
- Hajime Nishida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Image forming apparatus, maintenance-recovery mechanism, and suctio...
- Publication number 20070115319
- Publication date May 24, 2007
- Kazumasa Ishikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Image forming apparatus
- Publication number 20060055727
- Publication date Mar 16, 2006
- Kazumasa Ishikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Image forming device
- Publication number 20050265749
- Publication date Dec 1, 2005
- Shoji Asanuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image forming apparatus
- Publication number 20050194730
- Publication date Sep 8, 2005
- Hajime Nishida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Head cleaner and image forming apparatus
- Publication number 20050146554
- Publication date Jul 7, 2005
- Shoji Asanuma
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Image forming apparatus
- Publication number 20050088504
- Publication date Apr 28, 2005
- Taku Kudoh
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS