Toyoo Okamoto

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus having a photosensitive drum rotatable at d...
- Patent number 5,512,927
- Issue date Apr 30, 1996
- Ricoh Co., Ltd.
- Toyoo Okamoto
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus for cleaning photosensitive member of electrostatic copyi...
- Patent number 4,400,081
- Issue date Aug 23, 1983
- Ricoh Company, Ltd.
- Tadashi Yamashita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic copying apparatus
- Patent number 4,324,485
- Issue date Apr 13, 1982
- Ricoh Company, Ltd.
- Kouichi Asakura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Bias device for a copying machine
- Patent number 4,247,195
- Issue date Jan 27, 1981
- Ricoh Co., Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Reproduction apparatus comprising sorting device
- Patent number 4,208,122
- Issue date Jun 17, 1980
- Ricoh Company, Ltd.
- Minoru Iwamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Corona charger for image transfer
- Patent number 4,203,144
- Issue date May 13, 1980
- Ricoh Company, Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Auto-bias developing process and an electrophotographic copying mac...
- Patent number 4,168,329
- Issue date Sep 18, 1979
- Ricoh Co., Ltd.
- Seiichi Miyakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for detecting a toner concentration in a developing solution
- Patent number 4,166,702
- Issue date Sep 4, 1979
- Ricoh Company, Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum cleaning system for electrophotographic apparatus
- Patent number 4,165,172
- Issue date Aug 21, 1979
- Ricoh Co., Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer sheet separator for use with electrophotographic copying m...
- Patent number 4,159,172
- Issue date Jun 26, 1979
- Ricoh Company, Ltd.
- Tatsuo Tani formerly Nishikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for forming a uniform liquid film on a roller
- Patent number 4,149,485
- Issue date Apr 17, 1979
- Kabushiki Kaisha Ricoh
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Toyoo Okamoto

Person

Patents Grantslast 30 patents

Image forming apparatus having a photosensitive drum rotatable at d...

Apparatus for cleaning photosensitive member of electrostatic copyi...

Electrostatic copying apparatus

Bias device for a copying machine

Reproduction apparatus comprising sorting device

Corona charger for image transfer

Auto-bias developing process and an electrophotographic copying mac...

Device for detecting a toner concentration in a developing solution

Drum cleaning system for electrophotographic apparatus

Transfer sheet separator for use with electrophotographic copying m...

Apparatus for forming a uniform liquid film on a roller