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Hiroyuki Shirai
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Detachable two-frame process cartridge for an image forming apparatus
Patent number
6,118,961
Issue date
Sep 12, 2000
Canon Kabushiki Kaisha
Yoshiya Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge having shiftable cover with specific spacing betw...
Patent number
6,097,911
Issue date
Aug 1, 2000
Canon Kabushiki Kaisha
Kazushi Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge having shiftable cover and guide member for direc...
Patent number
6,075,956
Issue date
Jun 13, 2000
Canon Kabushiki Kaisha
Kazushi Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge and image forming apparatus usable therewith
Patent number
5,987,278
Issue date
Nov 16, 1999
Canon Kabushiki Kaisha
Yoshiya Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge and image forming apparatus usable therewith
Patent number
5,907,749
Issue date
May 25, 1999
Canon Kabushiki Kaisha
Yoshiya Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge having shiftable cover with inner protrusion
Patent number
5,878,304
Issue date
Mar 2, 1999
Canon Kabushiki Kaisha
Kazushi Watanabe
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge mountable in an image forming system and a method...
Patent number
5,828,928
Issue date
Oct 27, 1998
Canon Kabushiki Kaisha
Yoshikazu Sasago
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Detachable two-frame process cartridge for an image forming apparatus
Patent number
5,682,579
Issue date
Oct 28, 1997
Canon Kabushiki Kaisha
Yoshiya Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge and image forming system on which process cartrid...
Patent number
5,623,328
Issue date
Apr 22, 1997
Canon Kabushiki Kaisha
Tadayuki Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge with blade member having a flat-surface side and...
Patent number
5,608,509
Issue date
Mar 4, 1997
Canon Kabushiki Kaisha
Hiroyuki Shirai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Blade member having a flat-surface side and an angled-surface side
Patent number
5,470,635
Issue date
Nov 28, 1995
Canon Kabushiki Kaisha
Hiroyuki Shirai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device for copying machine
Patent number
D355208
Issue date
Feb 7, 1995
Canon Kabushiki Kaisha
Masaaki Ishibashi
D18 - Printing and office machinery
Information
Patent Grant
Cleaning device, process cartridge incorporating the cleaning devic...
Patent number
5,383,011
Issue date
Jan 17, 1995
Canon Kabushiki Kaisha
Atsushi Numagami
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Detachable two-frame process cartridge for an image forming apparatus
Patent number
5,294,960
Issue date
Mar 15, 1994
Canon Kabushiki Kaisha
Yoshiya Nomura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge detachably mountable to image forming apparatus f...
Patent number
5,208,634
Issue date
May 4, 1993
Canon Kabushiki Kaisha
Isao Ikemoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner seal for developing unit in process cartridge
Patent number
5,134,960
Issue date
Aug 4, 1992
Canon Kabushiki Kaisha
Hiroyuki Shirai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY