Tatsuya Kubo

Follow

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing unit and image forming apparatus
- Patent number 7,466,946
- Issue date Dec 16, 2008
- Ricoh Printing Systems, Ltd.
- Akio Tsujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic device with contaminant-resistant photoconducto...
- Patent number 7,421,222
- Issue date Sep 2, 2008
- Ricoh Printing Systems, Ltd.
- Tatsuya Kubo
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
Developing unit and image forming apparatus
- Publication number 20060216069
- Publication date Sep 28, 2006
- Ricoh Printing Systems, Ltd.
- Akio Tsujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photoconductor charging device and image forming device using same
- Publication number 20050162136
- Publication date Jul 28, 2005
- Tatsuya Kubo
- G05 - CONTROLLING REGULATING
Information Patent Application
Image forming apparatus and charging device
- Publication number 20050053396
- Publication date Mar 10, 2005
- Hitachi Printing Solutions, Ltd.
- Tatsuya Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY