Yasuo Yamaguchi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical writing device, image forming apparatus, and method for con...
- Patent number 9,245,217
- Issue date Jan 26, 2016
- Ricoh Company, Limited
- Yoshinori Shirasaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Toner consumption calculator, image forming apparatus, and toner co...
- Patent number 8,781,343
- Issue date Jul 15, 2014
- Ricoh Company, Limited
- Masayuki Hayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical writing device, image forming apparatus, optical writing me...
- Patent number 8,576,267
- Issue date Nov 5, 2013
- Ricoh Company, Limited
- Motohiro Kawanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TONER CONSUMPTION CALCULATOR, IMAGE FORMING APPARATUS, AND TONER CO...
- Publication number 20130071130
- Publication date Mar 21, 2013
- Masayuki HAYASHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD FOR CON...
- Publication number 20130044176
- Publication date Feb 21, 2013
- Yoshinori Shirasaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, OPTICAL WRITING ME...
- Publication number 20120300010
- Publication date Nov 29, 2012
- Motohiro KAWANABE
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Image forming system
- Publication number 20100225041
- Publication date Sep 9, 2010
- Ricoh Company, Limited
- Yasuo Matsuyama
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER