Toshifumi Watanabe

Person

Toyokawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus having function for automatically adjusting...
- Patent number 6,285,839
- Issue date Sep 4, 2001
- Minolta Co., Ltd.
- Masaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus that reduces test toner cleaning
- Patent number 6,249,656
- Issue date Jun 19, 2001
- Minolta Co., Ltd.
- Toshifumi Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 6,021,288
- Issue date Feb 1, 2000
- Minolta Co., Ltd.
- Yukihiko Okuno
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Tandem-type image forming apparatus and image forming condition det...
- Patent number 5,978,615
- Issue date Nov 2, 1999
- Minolta Co., Ltd.
- Masaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for measuring toner concentration in developer comprising to...
- Patent number 5,860,041
- Issue date Jan 12, 1999
- Minolta Co., Ltd.
- Masaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Digital image forming apparatus with test image optimization
- Patent number 5,822,079
- Issue date Oct 13, 1998
- Minolta Co., Ltd.
- Yukihiko Okuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image formation apparatus that can maintain appropriately toner den...
- Patent number 5,708,918
- Issue date Jan 13, 1998
- Minolta Co., Ltd.
- Yukihiko Okuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Digital image forming apparatus which specifies a sensitivity chara...
- Patent number 5,694,223
- Issue date Dec 2, 1997
- Minolta Co., Ltd.
- Kentaro Katori
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image forming apparatus
- Patent number 5,581,221
- Issue date Dec 3, 1996
- Minolta Co. Ltd.
- Atsushi Kawai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Toshifumi Watanabe

Person

Patents Grantslast 30 patents

Image forming apparatus having function for automatically adjusting...

Image forming apparatus that reduces test toner cleaning

Image forming apparatus

Tandem-type image forming apparatus and image forming condition det...

Device for measuring toner concentration in developer comprising to...

Digital image forming apparatus with test image optimization

Image formation apparatus that can maintain appropriately toner den...

Digital image forming apparatus which specifies a sensitivity chara...

Electrophotographic image forming apparatus