Shuichi Karasawa

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Kokubunji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composite photosensitive material for use in electrophotography
- Patent number 4,521,504
- Issue date Jun 4, 1985
- Ricoh Company, Ltd.
- Seiitj Sakuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Copying method and apparatus
- Patent number 4,413,899
- Issue date Nov 8, 1983
- Ricoh Company, Ltd.
- Shuichi Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multi-color electrostatic copying apparatus
- Patent number 4,351,604
- Issue date Sep 28, 1982
- Ricoh Company, Ltd.
- Shuichi Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic development apparatus
- Patent number 4,308,821
- Issue date Jan 5, 1982
- Ricoh Company, Ltd.
- Fuyuhiko Matsumoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Improved electrostatic head with toner-repelling electrode
- Patent number 4,123,762
- Issue date Oct 31, 1978
- Ricoh Company, Ltd.
- Satoru Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic printing apparatus comprising improved printing elect...
- Patent number 4,118,710
- Issue date Oct 3, 1978
- Ricoh Company, Ltd.
- Satoru Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY