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Koichi Tanigawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor device having a memory and method of controlling the...
Patent number
11,562,774
Issue date
Jan 24, 2023
Renesas Electronics Corporation
Koichi Tanigawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Fixing apparatus preventing leakage of electric current from inner...
Patent number
6,347,211
Issue date
Feb 12, 2002
Canon Kabushiki Kaisha
Hideo Nanataki
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Image heating device using induction heating for image heating
Patent number
6,031,215
Issue date
Feb 29, 2000
Canon Kabushiki Kaisha
Hideo Nanataki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fixing apparatus having a fixing roller with a non-adhesive surface...
Patent number
6,005,594
Issue date
Dec 21, 1999
Canon Kabushiki Kaisha
Hideo Nanataki
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Image heating apparatus
Patent number
5,970,299
Issue date
Oct 19, 1999
Canon Kabushiki Kaisha
Tetsuya Sano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with voltage polarity switching means
Patent number
5,940,668
Issue date
Aug 17, 1999
Canon Kabushiki Kaisha
Koichi Tanigawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image transfer apparatus
Patent number
5,918,096
Issue date
Jun 29, 1999
Canon Kabushiki Kaisha
Tetsuya Sano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Page printer
Patent number
5,850,245
Issue date
Dec 15, 1998
Canon Kabushiki Kaisha
Masahiro Goto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Image forming apparatus comprising image bearing member, intermedia...
Patent number
5,732,314
Issue date
Mar 24, 1998
Canon Kabushiki Kaisha
Shinichi Tsukida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image forming apparatus and method for forming a color image...
Patent number
5,715,498
Issue date
Feb 3, 1998
Canon Kabushiki Kaisha
Akihiko Takeuchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming method
Patent number
5,659,857
Issue date
Aug 19, 1997
Canon Kabushiki Kaisha
Masuo Yamazaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing method using developing electric field having back-trans...
Patent number
5,659,840
Issue date
Aug 19, 1997
Canon Kabushiki Kaisha
Toshio Miyamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic image forming system
Patent number
5,589,924
Issue date
Dec 31, 1996
Canon Kabushiki Kaisha
Hideyuki Yano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developer carrying member utilizing oscillating bias having constan...
Patent number
5,519,471
Issue date
May 21, 1996
Canon Kabushiki Kaisha
Katsuhiko Nishimura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with peripheral speed difference between im...
Patent number
5,519,475
Issue date
May 21, 1996
Canon Kabushiki Kaisha
Toshio Miyamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fixing device with means for limiting a distance between heating an...
Patent number
5,493,380
Issue date
Feb 20, 1996
Canon Kabushiki Kaisha
Tooru Saitou
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fixing device
Patent number
5,450,181
Issue date
Sep 12, 1995
Canon Kabushiki Kaisha
Shinichi Tsukida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with intermediate transfer member
Patent number
5,438,398
Issue date
Aug 1, 1995
Canon Kabushiki Kaisha
Koichi Tanigawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device, image forming apparatus and detachably mountable p...
Patent number
5,412,455
Issue date
May 2, 1995
Canon Kabushiki Kaisha
Kazuaki Ono
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fixing rotatable member having conductive parting layer and fixing...
Patent number
5,331,385
Issue date
Jul 19, 1994
Canon Kabushiki Kaisha
Yasumasa Ohtsuka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process cartridge and image forming apparatus including a lubricant...
Patent number
5,321,482
Issue date
Jun 14, 1994
Canon Kabushiki Kaisha
Hideyuki Yano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
5,253,022
Issue date
Oct 12, 1993
Canon Kabushiki Kaisha
Akihiko Takeuchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Charging device having charging member, process cartridge and image...
Patent number
5,235,386
Issue date
Aug 10, 1993
Canon Kabushiki Kaisha
Hideyuki Yano
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer roller with a resistance determined in accordance with its...
Patent number
5,223,900
Issue date
Jun 29, 1993
Canon Kabushiki Kaisha
Takayasu Yuminamochi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus with constant voltage and constant current...
Patent number
5,179,397
Issue date
Jan 12, 1993
Canon Kabushiki Kaisha
Yukihiro Ohzeki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus supplied with controllable bias voltage
Patent number
5,177,549
Issue date
Jan 5, 1993
Canon Kabushiki Kaisha
Yasumasa Ohtsuka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having transfer device and image bearing me...
Patent number
5,159,393
Issue date
Oct 27, 1992
Canon Kabushiki Kaisha
Koichi Hiroshima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
5,157,442
Issue date
Oct 20, 1992
Canon Kabushiki Kaisha
Koichi Tanigawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having transfer member for carrying transfe...
Patent number
5,153,654
Issue date
Oct 6, 1992
Canon Kabushiki Kaisha
Takayasu Yuminamochi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image recording forming blanks in peripheral edges
Patent number
4,972,209
Issue date
Nov 20, 1990
Canon Kabushiki Kaisha
Koichi Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF CONTROLLING THE SAME
Publication number
20220335985
Publication date
Oct 20, 2022
RENESAS ELECTRONICS CORPORATION
Koichi TANIGAWA
G11 - INFORMATION STORAGE
Information
Patent Application
Microcomputer
Publication number
20040179408
Publication date
Sep 16, 2004
Renesas Technology Corp.
Koichi Tanigawa
G11 - INFORMATION STORAGE
Information
Patent Application
FIXING APPARATUS PREVENTING LEAKAGE OF ELECTRIC CURRENT FROM INNER...
Publication number
20010016132
Publication date
Aug 23, 2001
HIDEO NANATAKI
B82 - NANO-TECHNOLOGY