Koji Sakamoto

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Solid-liquid separator with self-priming pump
- Patent number 8,512,565
- Issue date Aug 20, 2013
- World Chemical Co., Ltd.
- Yoji Mori
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Image forming apparatus to form smooth image with inconspicuous gra...
- Patent number 6,342,910
- Issue date Jan 29, 2002
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for forming toner images
- Patent number 6,122,468
- Issue date Sep 19, 2000
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and cleaning device therefor
- Patent number 5,606,408
- Issue date Feb 25, 1997
- Ricoh Company, Ltd.
- Hidetoshi Yano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color image forming apparatus having integral multiple length belt
- Patent number 5,515,145
- Issue date May 7, 1996
- Ricoh Company, Ltd.
- Eiichi Sasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color image forming apparatus
- Patent number 5,440,373
- Issue date Aug 8, 1995
- Ricoh Company, Ltd.
- Tsuyoshi Deki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Installation and removal structure of a developing unit and a toner...
- Patent number 5,289,243
- Issue date Feb 22, 1994
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 5,008,711
- Issue date Apr 16, 1991
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Replacement of a cartridge usable with image forming equipment
- Patent number 4,943,828
- Issue date Jul 24, 1990
- Ricoh Company, Ltd.
- Yoshiharu Manabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Holder device for handling an image carrier of an image forming app...
- Patent number 4,908,661
- Issue date Mar 13, 1990
- Ricoh Company, Ltd.
- Nobuo Iwata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device with a developing roller and using a single-compo...
- Patent number 4,899,689
- Issue date Feb 13, 1990
- Ricoh Company, Ltd.
- Fuchio Takeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 4,896,625
- Issue date Jan 30, 1990
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 4,862,212
- Issue date Aug 29, 1989
- Ricoh Company, Ltd.
- Misao Tanzawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a removable image forming process kit
- Patent number 4,862,209
- Issue date Aug 29, 1989
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 4,674,439
- Issue date Jun 23, 1987
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 4,656,964
- Issue date Apr 14, 1987
- Ricoh Company, Ltd.
- Fuchio Kanno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for detecting toner concentration of two-compo...
- Patent number 4,640,129
- Issue date Feb 3, 1987
- Seiichi Miyakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of maintaining the correct conditions of an electrophotograp...
- Patent number RE32330
- Issue date Jan 13, 1987
- Ricoh Co., Ltd.
- Seiichi Miyakawa
- 355 - Photocopying
Information Patent Grant
Developing device
- Patent number 4,625,676
- Issue date Dec 2, 1986
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device with regulated developer supply
- Patent number 4,624,545
- Issue date Nov 25, 1986
- Ricoh Company, Ltd.
- Wataru Yasuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus for electrostatic photography
- Patent number 4,576,463
- Issue date Mar 18, 1986
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus for electrostatic photography
- Patent number 4,575,218
- Issue date Mar 11, 1986
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 4,575,220
- Issue date Mar 11, 1986
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having dispersed floating electrodes in a dielect...
- Patent number 4,564,285
- Issue date Jan 14, 1986
- Ricoh Company, Ltd.
- Wataru Yasuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Voltage-controlled developing device
- Patent number 4,561,381
- Issue date Dec 31, 1985
- Ricoh Company, Ltd.
- Toshio Kaneko
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 4,538,898
- Issue date Sep 3, 1985
- Ricoh Company, Ltd.
- Fuchio Kanno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for forming a developer film
- Patent number 4,528,937
- Issue date Jul 16, 1985
- Ricoh Co., Ltd.
- Fuchio Kanno
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Developing apparatus for electrostatic photography
- Patent number 4,445,771
- Issue date May 1, 1984
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Collection of suspended toner particles
- Patent number 4,412,736
- Issue date Nov 1, 1983
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer medium separating device
- Patent number 4,408,863
- Issue date Oct 11, 1983
- Ricoh Company, Ltd.
- Yoshihiro Ogata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Solid-liquid separator with self-priming pump
- Publication number 20110192771
- Publication date Aug 11, 2011
- World Chemical Co., Ltd.
- Yoji Mori
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Koji Sakamoto

Person

Patents Grantslast 30 patents

Solid-liquid separator with self-priming pump

Image forming apparatus to form smooth image with inconspicuous gra...

Method and apparatus for forming toner images

Image forming apparatus and cleaning device therefor

Color image forming apparatus having integral multiple length belt

Color image forming apparatus

Installation and removal structure of a developing unit and a toner...

Image forming apparatus

Replacement of a cartridge usable with image forming equipment

Holder device for handling an image carrier of an image forming app...

Developing device with a developing roller and using a single-compo...

Developing device

Image forming apparatus

Image forming apparatus having a removable image forming process kit

Developing device

Developing device

Method and apparatus for detecting toner concentration of two-compo...

Method of maintaining the correct conditions of an electrophotograp...

Developing device

Developing device with regulated developer supply

Developing apparatus for electrostatic photography

Developing apparatus for electrostatic photography

Developing device

Developing device having dispersed floating electrodes in a dielect...

Voltage-controlled developing device

Developing device

Device for forming a developer film

Developing apparatus for electrostatic photography

Collection of suspended toner particles

Transfer medium separating device

Patents Applicationslast 30 patents

Solid-liquid separator with self-priming pump