Tadashi Tonegawa

Person

Nara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus with layer thinning detection
- Patent number 5,160,967
- Issue date Nov 3, 1992
- Sharp Kabushiki Kaisha
- Tadashi Tonegawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heat control for photoreceptor
- Patent number 5,019,862
- Issue date May 28, 1991
- Sharp Kabushiki Kaisha
- Masatsugu Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoreceptor comprising amorphous silicon laye...
- Patent number 4,910,111
- Issue date Mar 20, 1990
- Sharp Kabushiki Kaisha
- Kazuki Wakita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic system
- Patent number 4,757,345
- Issue date Jul 12, 1988
- Sharp Kabushiki Kaisha
- Kunio Ohashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Doped amorphous silicon photoconductive device having a protective...
- Patent number 4,683,186
- Issue date Jul 28, 1987
- Sharp Kabushiki Kaisha
- Kunio Ohashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic copying method
- Patent number 4,643,559
- Issue date Feb 17, 1987
- Sharp Kabushiki Kaisha
- Tadashi Tonegawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoconductive device having photoconductive layer containing hydr...
- Patent number 4,632,894
- Issue date Dec 30, 1986
- Sharp Kabushiki Kaisha
- Kunio Ohashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Tadashi Tonegawa

Person

Patents Grantslast 30 patents

Image forming apparatus with layer thinning detection

Heat control for photoreceptor

Electrophotographic photoreceptor comprising amorphous silicon laye...

Electrophotographic system

Doped amorphous silicon photoconductive device having a protective...

Electrophotographic copying method

Photoconductive device having photoconductive layer containing hydr...