Akio Fujiwara

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic toner production process
- Patent number 5,362,595
- Issue date Nov 8, 1994
- Mitsui Toatsu Chemicals, Incorporated
- Nobuhiro Hirayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic toner
- Patent number 5,084,368
- Issue date Jan 28, 1992
- Mitsui Toatsu Chemicals, Incorporated
- Nobuhiro Hirayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic toner for high speed electrophotography
- Patent number 4,857,433
- Issue date Aug 15, 1989
- Mitsui Toatsu Chemicals, Incorporated
- Masaaki Shin
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner composition for the electrophotography
- Patent number 4,833,057
- Issue date May 23, 1989
- Mitsui Toatsu Chemicals, Inc.
- Akira Misawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic process uses toner comprising vinyl copolymer
- Patent number 4,727,010
- Issue date Feb 23, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Masaaki Shin
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY