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Koji Nakayama
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Shizuoka, JP
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last 30 patents
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Patent Grant
Polyester resin for electrophotography toner, process for preparing...
Patent number
5,902,709
Issue date
May 11, 1999
Tomoegawa Paper Co., Ltd.
Koji Nakayama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyester resin for electrophotography toner, process for preparing...
Patent number
5,830,979
Issue date
Nov 3, 1998
Tomoegawa Paper Co., Ltd.
Koji Nakayama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electrophotographic toner
Patent number
5,753,397
Issue date
May 19, 1998
Tomoegawa Paper Co., Ltd.
Koji Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography and process for producing the same
Patent number
5,629,121
Issue date
May 13, 1997
Tomoegawa Paper Co., Ltd.
Koji Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography and process for producing the same
Patent number
5,624,779
Issue date
Apr 29, 1997
Tomoegawa Paper Co, Ltd.
Koji Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography
Patent number
5,248,581
Issue date
Sep 28, 1993
Tomoegawa Paper Co., Ltd.
Koji Nakayama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY