Akira Midorikawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic copier with a capability of automatically setti...
- Patent number 4,912,512
- Issue date Mar 27, 1990
- Ricoh Company, Ltd.
- Akira Midorikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Guidance device for manipulation of machine
- Patent number 4,682,158
- Issue date Jul 21, 1987
- Ricoh Company, Ltd.
- Masaji Ito
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Power supply control device for copier having timer
- Patent number 4,677,310
- Issue date Jun 30, 1987
- Ricoh Company, Ltd.
- Akira Midorikawa
- G05 - CONTROLLING REGULATING
Information Patent Grant
Copier with image editing function
- Patent number 4,627,707
- Issue date Dec 9, 1986
- Ricoh Company, Ltd.
- Tatsuo Tani
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning apparatus for electrophotography comprising lubricant film...
- Patent number 4,435,074
- Issue date Mar 6, 1984
- Ricoh Company, Ltd.
- Akira Midorikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing unit for electrophotography
- Patent number 4,423,134
- Issue date Dec 27, 1983
- Ricoh Company, Ltd.
- Seiichi Miyakawa
- 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
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

Akira Midorikawa

Person

Patents Grantslast 30 patents

Electrophotographic copier with a capability of automatically setti...

Guidance device for manipulation of machine

Power supply control device for copier having timer

Copier with image editing function

Cleaning apparatus for electrophotography comprising lubricant film...

Developing unit for electrophotography

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

Drum cleaning system for electrophotographic apparatus