Kouhei Katayama

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Hitachinaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic apparatus having a printing density controller...
- Patent number 6,377,766
- Issue date Apr 23, 2002
- Hitachi Koki Co., Ltd.
- Hiroshi Ueno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing unit for electro-photographic apparatus
- Patent number 5,579,091
- Issue date Nov 26, 1996
- Hitachi Koki Co., Ltd.
- Koutarou Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY