Hisao Ishizu

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Tokyo, JP

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Patents Grantslast 30 patents

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Electrostatic recording apparatus having a cooled and insulated was...
- Patent number 4,891,678
- Issue date Jan 2, 1990
- Ricoh Company, Ltd.
- Hisao Ishizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic recording apparatus
- Patent number 4,875,063
- Issue date Oct 17, 1989
- Ricoh Company, Ltd.
- Hiroyuki Idenawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet feeding apparatus
- Patent number 4,750,020
- Issue date Jun 7, 1988
- Ricoh Company, Ltd.
- Hisao Ishizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer supply system for dry process electrophotographic recordi...
- Patent number 4,629,309
- Issue date Dec 16, 1986
- Ricoh Company, Ltd.
- Moriyoshi Tsukano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY