Nippon Iron Powder Co. Ltd.

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Developer for electrostatic image comprising coated carrier
- Patent number 4,977,054
- Issue date Dec 11, 1990
- Kao Corporation
- Toshio Honjo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnetic carrier of developer for electrophotographic copying machi...
- Patent number 4,898,801
- Issue date Feb 6, 1990
- Fuji Xerox Co., Ltd.
- Hidekiyo Tachibana
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Carrier for electrophotographic developer
- Patent number 4,871,639
- Issue date Oct 3, 1989
- Fuji Xerox Co., Ltd.
- Takayoshi Aoki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for producing carriers for developer
- Patent number 4,861,694
- Issue date Aug 29, 1989
- Fuji Xerox Co., Ltd.
- Takayoshi Aoki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ferrite carriers for electrophotographic development
- Patent number 4,598,034
- Issue date Jul 1, 1986
- Nippon Iron Powder Co., Ltd.
- Toshio Honjo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for producing activated carbon
- Patent number 3,950,267
- Issue date Apr 13, 1976
- Japan Eng. Co., Ltd.
- Hideo Arakawa
- C01 - INORGANIC CHEMISTRY

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