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Kazuo Tsubuko
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Shizuoka-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Recording material, toner, liquid developer and image forming metho...
Patent number
7,670,742
Issue date
Mar 2, 2010
Ricoh Company, Ltd.
Kazuo Tsubuko
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Electrophotographic liquid developer, image forming method and appa...
Patent number
7,122,287
Issue date
Oct 17, 2006
Ricoh Company, Ltd.
Tsuyoshi Asami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid recording material
Patent number
6,939,655
Issue date
Sep 6, 2005
Research Laboratories of Australia PTY Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Recording liquid and image forming method using the recording liquid
Patent number
6,692,881
Issue date
Feb 17, 2004
Ricoh Company Limited
Kazuo Tsubuko
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Liquid recording material
Patent number
6,620,569
Issue date
Sep 16, 2003
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming process using wet developing method
Patent number
6,522,852
Issue date
Feb 18, 2003
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for developing electrostatic image and image formi...
Patent number
6,447,973
Issue date
Sep 10, 2002
Ricoh Company, Ltd.
Tsuyoshi Asami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer, method of producing the liquid developer and imag...
Patent number
6,020,103
Issue date
Feb 1, 2000
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ink composition and recording method using the same
Patent number
5,952,048
Issue date
Sep 14, 1999
Ricoh Company, Ltd.
Kazuo Tsubuko
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Developer for use in electrophotography, and image formation method...
Patent number
5,851,717
Issue date
Dec 22, 1998
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for electrostatic electrophotography
Patent number
5,759,733
Issue date
Jun 2, 1998
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fluorine-containing graft copolymer and toner using the same
Patent number
5,328,794
Issue date
Jul 12, 1994
Ricoh Company, Ltd.
Tsubuko Kazuo
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing a vinyl resin using a silicon oil solvent
Patent number
5,189,102
Issue date
Feb 23, 1993
Ricoh Company, Ltd.
Kazuo Tsubuko
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Liquid developer for image fixing method using heat application rol...
Patent number
5,169,739
Issue date
Dec 8, 1992
Ricoh Company, Ltd.
Kazuhiko Umemura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative toner for developing latent electrostatic images
Patent number
5,085,965
Issue date
Feb 4, 1992
Ricoh Company, Ltd.
Toshiki Nanya
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Toner for electrophotography including fluorine contained graft cop...
Patent number
5,061,587
Issue date
Oct 29, 1991
Ricoh Company Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for electrophotography
Patent number
5,026,621
Issue date
Jun 25, 1991
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for electrostatic latent images using flushed pigm...
Patent number
4,957,842
Issue date
Sep 18, 1990
Ricoh Co., Ltd.
Toshiyuki Fukase
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer for electrophotography containing ionomer resin
Patent number
4,925,763
Issue date
May 15, 1990
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer for electrophotography
Patent number
4,855,207
Issue date
Aug 8, 1989
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for electrophotography
Patent number
4,797,341
Issue date
Jan 10, 1989
Ricoh Co., Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Non-aqueous type resin dispersion and electrophotographic developer...
Patent number
4,764,447
Issue date
Aug 16, 1988
Ricoh Co., Ltd.
Kazuo Tsubuko
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Liquid developer for electrophotography
Patent number
4,690,881
Issue date
Sep 1, 1987
Ricoh Co., Ltd.
Kayoko Nagai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Non-aqueous type resin and electrophotographic developer containing...
Patent number
4,634,651
Issue date
Jan 6, 1987
Ricoh Co., Ltd.
Makoto Okawara
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Liquid developer for electrophotography
Patent number
4,595,646
Issue date
Jun 17, 1986
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for use in electrophotography
Patent number
4,388,395
Issue date
Jun 14, 1983
Ricoh Co., Ltd.
Kazuo Tsubuko
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Liquid developer for use in electrostatic photography
Patent number
4,360,580
Issue date
Nov 23, 1982
Ricoh Co., Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for use in electrophotography
Patent number
4,264,699
Issue date
Apr 28, 1981
Ricoh Co., Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for use in electrophotography
Patent number
4,250,241
Issue date
Feb 10, 1981
Ricoh Company, Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for use in electrophotography
Patent number
4,181,620
Issue date
Jan 1, 1980
Ricoh Co., Ltd.
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Recording material, toner, liquid developer and image forming metho...
Publication number
20060222985
Publication date
Oct 5, 2006
Kazuo Tsubuko
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Recording liquid and image forming method using the recording liquid
Publication number
20040259015
Publication date
Dec 23, 2004
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Liquid recording material
Publication number
20040010075
Publication date
Jan 15, 2004
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Electrophotographic liquid developer, image forming method and appa...
Publication number
20040005510
Publication date
Jan 8, 2004
Tsuyoshi Asami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Recording liquid and image forming method using the recording liquid
Publication number
20030099894
Publication date
May 29, 2003
Kazuo Tsubuko
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
Liquid recording material
Publication number
20030065064
Publication date
Apr 3, 2003
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Liquid recording material
Publication number
20020081515
Publication date
Jun 27, 2002
Kazuo Tsubuko
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY