Toyoo Okamoto

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Exposure controlling apparatus for electrophotographic copying machine
- Patent number 4,095,884
- Issue date Jun 20, 1978
- Ricoh Company, Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Squeeze roller retraction assembly
- Patent number 4,056,315
- Issue date Nov 1, 1977
- Ricoh Company, Ltd.
- Kenzo Ariyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for forming a uniform liquid film on a roller
- Patent number 4,011,353
- Issue date Mar 8, 1977
- Kabushiki Kaisha Ricoh
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing unit for electrophotography
- Patent number 4,006,709
- Issue date Feb 8, 1977
- Ricoh Co., Ltd.
- Seiichi Miyakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dry type developing device for a copying apparatus or like apparatus
- Patent number 3,941,469
- Issue date Mar 2, 1976
- Ricoh Co., Ltd.
- Toyoo Okamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY