Nobuhiko Umezawa

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for image forming capable of effectively regul...
- Patent number 7,254,357
- Issue date Aug 7, 2007
- Ricoh Company, Limited
- Nobuhiko Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with reversely rotated developer bearing me...
- Patent number 7,177,573
- Issue date Feb 13, 2007
- Ricoh Company Limited
- Noriyuki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 6,795,674
- Issue date Sep 21, 2004
- Ricoh Company, Ltd.
- Shuuichi Endoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for image developing capable of effectively fo...
- Patent number 6,775,506
- Issue date Aug 10, 2004
- Ricoh Company, Ltd.
- Shuuichi Endoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 6,643,486
- Issue date Nov 4, 2003
- Ricoh Company, Ltd.
- Shuuichi Endoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for forming an image capable of supplying a pr...
- Patent number 6,295,438
- Issue date Sep 25, 2001
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing unit for an image forming apparatus having a magnetic ro...
- Patent number 5,953,568
- Issue date Sep 14, 1999
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a mounting/dismounting mechanism
- Patent number 5,848,329
- Issue date Dec 8, 1998
- Ricoh Company, Ltd.
- Yuichi Aoyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and cleaning device for transfer material c...
- Patent number 5,797,063
- Issue date Aug 18, 1998
- Ricoh Company, Ltd.
- Nobuhiko Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color image forming apparatus utilizing liquid development
- Patent number 5,374,980
- Issue date Dec 20, 1994
- Ricoh Company, Ltd.
- Nobuaki Kubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for image forming capable of effectively regul...
- Publication number 20050226651
- Publication date Oct 13, 2005
- Nobuhiko Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20040234296
- Publication date Nov 25, 2004
- Noriyuki Kimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device for an image forming apparatus
- Publication number 20040071482
- Publication date Apr 15, 2004
- Shuuichi Endoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Method and apparatus for image developing capable of effectively fo...
- Publication number 20020012553
- Publication date Jan 31, 2002
- RICOH COMPANY, LTD.
- Shuuichi Endoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Nobuhiko Umezawa

Person

Patents Grantslast 30 patents

Method and apparatus for image forming capable of effectively regul...

Image forming apparatus with reversely rotated developer bearing me...

Developing device for an image forming apparatus

Method and apparatus for image developing capable of effectively fo...

Developing device for an image forming apparatus

Method and apparatus for forming an image capable of supplying a pr...

Developing unit for an image forming apparatus having a magnetic ro...

Image forming apparatus having a mounting/dismounting mechanism

Image forming apparatus and cleaning device for transfer material c...

Color image forming apparatus utilizing liquid development

Patents Applicationslast 30 patents

Method and apparatus for image forming capable of effectively regul...

Image forming apparatus

Developing device for an image forming apparatus

Method and apparatus for image developing capable of effectively fo...