Eriko Maruyama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus including a developer replenishing device w...
- Patent number 8,180,261
- Issue date May 15, 2012
- Ricoh Company, Ltd.
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus using same
- Patent number 7,962,071
- Issue date Jun 14, 2011
- Ricoh Company, Ltd.
- Kiyonori Tsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge therefore having a cl...
- Patent number 7,809,322
- Issue date Oct 5, 2010
- Ricoh Company, Ltd.
- Nobutaka Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a developer replenishing device f...
- Patent number 7,512,364
- Issue date Mar 31, 2009
- Ricoh Company, Ltd.
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus having a unit for conveying tone...
- Patent number 7,444,107
- Issue date Oct 28, 2008
- Ricoh Company, Ltd.
- Nobutaka Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for image forming effectively detecting deteri...
- Patent number 7,346,286
- Issue date Mar 18, 2008
- Ricoh Company, Ltd.
- Junichi Matsumoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a developer replenishing device f...
- Patent number 7,127,198
- Issue date Oct 24, 2006
- Ricoh Company, Ltd.
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS INCLUDING A DEVELOPER REPLENISHING DEVICE F...
- Publication number 20090185832
- Publication date Jul 23, 2009
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND APPARATUS HAVING A UNIT FOR CONVEYING TONE...
- Publication number 20090041520
- Publication date Feb 12, 2009
- Nobutaka Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING SAME
- Publication number 20080181670
- Publication date Jul 31, 2008
- Kiyonori TSUDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus including a developer replenishing device f...
- Publication number 20070009289
- Publication date Jan 11, 2007
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Method and apparatus for image forming effectively detecting deteri...
- Publication number 20060008281
- Publication date Jan 12, 2006
- Junichi Matsumoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus, process cartridge, developing unit, and cl...
- Publication number 20050265759
- Publication date Dec 1, 2005
- Nobutaka Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus including a developer replenishing device
- Publication number 20050163537
- Publication date Jul 28, 2005
- Satoshi Muramatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Eriko Maruyama

Person

Patents Grantslast 30 patents

Image forming apparatus including a developer replenishing device w...

Developing device and image forming apparatus using same

Image forming apparatus and process cartridge therefore having a cl...

Image forming apparatus including a developer replenishing device f...

Image forming method and apparatus having a unit for conveying tone...

Method and apparatus for image forming effectively detecting deteri...

Image forming apparatus including a developer replenishing device f...

Patents Applicationslast 30 patents

IMAGE FORMING APPARATUS INCLUDING A DEVELOPER REPLENISHING DEVICE F...

IMAGE FORMING METHOD AND APPARATUS HAVING A UNIT FOR CONVEYING TONE...

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING SAME

Image forming apparatus including a developer replenishing device f...

Method and apparatus for image forming effectively detecting deteri...

Image forming apparatus, process cartridge, developing unit, and cl...

Image forming apparatus including a developer replenishing device