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Kazuyoshi Hagiwara
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Method using toner and developer for developing electrostatic image
Patent number
6,541,174
Issue date
Apr 1, 2003
Canon Kabushiki Kaisha
Hirohide Tanikawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Toner and developer for developing electrostatic image, process for...
Patent number
6,187,496
Issue date
Feb 13, 2001
Canon Kabushiki Kaisha
Hirohide Tanikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner and developer for developing electrostatic image, process for...
Patent number
6,077,638
Issue date
Jun 20, 2000
Canon Kabushiki Kaisha
Hirohide Tanikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic image, image forming method, dev...
Patent number
6,057,073
Issue date
May 2, 2000
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic toner and process for producing magnetic toner
Patent number
5,716,746
Issue date
Feb 10, 1998
Canon Kabushiki Kaisha
Yushi Mikuriya
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer for developing electrostatic images and image forming method
Patent number
5,710,965
Issue date
Jan 20, 1998
Canon Kabushiki Kaisha
Keita Nozawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic images, image forming apparatus,...
Patent number
5,500,046
Issue date
Mar 19, 1996
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic image and image forming method
Patent number
5,447,813
Issue date
Sep 5, 1995
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method, image forming apparatus and apparatus unit
Patent number
5,436,701
Issue date
Jul 25, 1995
Canon Kabushiki Kaisha
Minoru Shimojo
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer for developing electrostatic image, image forming method,...
Patent number
5,406,357
Issue date
Apr 11, 1995
Canon Kabushiki Kaisha
Toshiaki Nakahara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic images, image forming apparatus,...
Patent number
5,389,484
Issue date
Feb 14, 1995
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Imaging method comprising a developer having a novel guanidine type...
Patent number
5,356,749
Issue date
Oct 18, 1994
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Magnetic toner
Patent number
5,354,637
Issue date
Oct 11, 1994
Canon Kabushiki Kaisha
Masayoshi Shimamura
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Developer for developing electrostatic image, image forming apparat...
Patent number
5,288,579
Issue date
Feb 22, 1994
Canon Kabushiki Kaisha
Katsuhiko Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner for developing electrostatic image and process for production...
Patent number
5,268,248
Issue date
Dec 7, 1993
Canon Kabushiki Kaisha
Hirohide Tanikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Guanidine type compound, toner for developing electrostatic images,...
Patent number
5,246,810
Issue date
Sep 21, 1993
Canon Kabushiki Kaisha
Kazuyoshi Hagiwara
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Toner containing a dimer of diarylguanidine type compound for devel...
Patent number
5,214,208
Issue date
May 25, 1993
Canon Kabushiki Kaisha
Katsuhiko Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner containing a dimer of diarylguanidine type compound for devel...
Patent number
5,084,369
Issue date
Jan 28, 1992
Canon Kabushiki Kaisha
Katsuhiko Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY