Yuji Sawai

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image formation apparatus
- Patent number 6,405,002
- Issue date Jun 11, 2002
- Ricoh Company, Ltd.
- Hiromi Ogiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic image forming apparatus capable of reducing defective...
- Patent number 6,163,661
- Issue date Dec 19, 2000
- Ricoh Company, Ltd.
- Shinichi Namekata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic image forming apparatus
- Patent number 5,890,030
- Issue date Mar 30, 1999
- Ricoh Company, Ltd.
- Shinichi Namekata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 5,410,339
- Issue date Apr 25, 1995
- Ricoh Company, Ltd.
- Takashi Bisaiji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image-receiving sheet for electrophotography and electrophotographi...
- Patent number 5,208,211
- Issue date May 4, 1993
- Ricoh Company, Ltd.
- Tsuneo Kurotori
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of cleaning a transfer drum of an electrophotographic apparatus
- Patent number 5,057,873
- Issue date Oct 15, 1991
- Ricoh Company, Ltd.
- Yuji Sawai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of removing a film from an image carrier of an image forming...
- Patent number 5,003,354
- Issue date Mar 26, 1991
- Ricoh Company, Ltd.
- Yoshio Takamiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color-balance control method
- Patent number 4,989,043
- Issue date Jan 29, 1991
- Ricoh Company, Ltd.
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of removing a film from an image carrier
- Patent number 4,975,748
- Issue date Dec 4, 1990
- Ricoh Company, Ltd.
- Nobuyuki Koinuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pressure sensitive adhesive toner of clustered encapsulated porous...
- Patent number 4,254,201
- Issue date Mar 3, 1981
- Ricoh Company, Ltd.
- Yuji Sawai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Transfer device for forming a stable transfer electric field, and a...
- Publication number 20030118359
- Publication date Jun 26, 2003
- Hiromi Ogiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image formation apparatus
- Publication number 20010031159
- Publication date Oct 18, 2001
- RICOH COMPANY, LIMITED
- Hiromi Ogiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Person

Patents Grantslast 30 patents

Image formation apparatus

Electrostatic image forming apparatus capable of reducing defective...

Electrostatic image forming apparatus

Image forming apparatus

Image-receiving sheet for electrophotography and electrophotographi...

Method of cleaning a transfer drum of an electrophotographic apparatus

Method of removing a film from an image carrier of an image forming...

Color-balance control method

Method of removing a film from an image carrier

Pressure sensitive adhesive toner of clustered encapsulated porous...

Patents Applicationslast 30 patents

Transfer device for forming a stable transfer electric field, and a...

Image formation apparatus