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Hiroto Ohkawara
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Ibaraki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Video camera apparatus including automatic focusing
Patent number
7,719,605
Issue date
May 18, 2010
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Video camera apparatus including automatic focusing
Patent number
7,456,898
Issue date
Nov 25, 2008
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image pickup apparatus and power supply control method therefor
Patent number
7,149,421
Issue date
Dec 12, 2006
Canon Kabushiki Kaisha
Hiroto Ohkawara
G02 - OPTICS
Information
Patent Grant
Interchangeable lens video camera system
Patent number
7,098,954
Issue date
Aug 29, 2006
Canon Kabushiki Kaisha
Hirofumi Suda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image pickup apparatus with focusing lens control device
Patent number
7,006,139
Issue date
Feb 28, 2006
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image pickup apparatus and power supply control method therefor
Patent number
6,937,285
Issue date
Aug 30, 2005
Canon Kabushiki Kaisha
Hiroto Ohkawara
G02 - OPTICS
Information
Patent Grant
Video camera system with interchangeable lens assembly
Patent number
6,930,720
Issue date
Aug 16, 2005
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Automatic focus adjusting device with distance measuring area selec...
Patent number
6,850,280
Issue date
Feb 1, 2005
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image vibration prevention apparatus
Patent number
6,778,768
Issue date
Aug 17, 2004
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Lens control device for moving range correction
Patent number
6,744,468
Issue date
Jun 1, 2004
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Lens control device with operator and signal control
Patent number
6,731,339
Issue date
May 4, 2004
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Interchangeable lens video camera system having improved focusing
Patent number
6,683,652
Issue date
Jan 27, 2004
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for improving image vibration suppression
Patent number
6,630,950
Issue date
Oct 7, 2003
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image pickup apparatus with lens control apparatus and focusing len...
Patent number
6,577,343
Issue date
Jun 10, 2003
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image pickup apparatus having electronic zoom function based on opt...
Patent number
6,445,416
Issue date
Sep 3, 2002
Canon Kabushiki Kaisha
Kenji Kyuma
G02 - OPTICS
Information
Patent Grant
Video camera system with interchangeable lens assembly
Patent number
6,396,540
Issue date
May 28, 2002
Canon Kabushiki Kaisha
Hiroto Ohkawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Interchangeable lens video camera system
Patent number
6,373,524
Issue date
Apr 16, 2002
Canon Kabushiki Kaisha
Hirofumi Suda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Lens control device with AF restart feature
Patent number
6,356,307
Issue date
Mar 12, 2002
Canon Kabushiki Kaisha
Hiroto Ohkawara
G02 - OPTICS
Information
Patent Grant
Image shake correcting device
Patent number
6,278,842
Issue date
Aug 21, 2001
Canon Kabushiki Kaisha
Tatsuya Yamazaki
G02 - OPTICS
Information
Patent Grant
Video camera apparatus with distance measurement area adjusted base...
Patent number
6,236,431
Issue date
May 22, 2001
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image-shake correcting device
Patent number
6,078,751
Issue date
Jun 20, 2000
Canon Kabushiki Kaisha
Tatsuya Yamazaki
G02 - OPTICS
Information
Patent Grant
Image recording apparatus
Patent number
6,028,981
Issue date
Feb 22, 2000
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Video camera apparatus with automatic focus operation dependent on...
Patent number
5,933,187
Issue date
Aug 3, 1999
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Lens control device
Patent number
5,786,853
Issue date
Jul 28, 1998
Canon Kabushiki Kaisha
Hiroto Ohkawara
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
VIDEO CAMERA APPARATUS INCLUDING AUTOMATIC FOCUSING
Publication number
20090066832
Publication date
Mar 12, 2009
Canon Kabushiki Kaisha
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Image pickup apparatus and power supply control method therefor
Publication number
20050249489
Publication date
Nov 10, 2005
Hiroto Ohkawara
G02 - OPTICS
Information
Patent Application
Video camera apparatus
Publication number
20050083430
Publication date
Apr 21, 2005
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Image pickup apparatus and power supply control method therefor
Publication number
20040008422
Publication date
Jan 15, 2004
Hiroto Ohkawara
G02 - OPTICS
Information
Patent Application
LENS CONTROL DEVICE FOR MOVING RANGE CORRECTION
Publication number
20020135693
Publication date
Sep 26, 2002
HIROTO OHKAWARA
G02 - OPTICS
Information
Patent Application
IMAGE PICKUP APPARATUS HAVING ELECTRONIC ZOOM BASED ON OPTICAL ZOOM...
Publication number
20020044206
Publication date
Apr 18, 2002
KENJI KYUMA
G02 - OPTICS
Information
Patent Application
LENS CONTROL DEVICE
Publication number
20010048479
Publication date
Dec 6, 2001
HIROTO OHKAWARA
G02 - OPTICS
Information
Patent Application
Video camera apparatus
Publication number
20010010559
Publication date
Aug 2, 2001
Masahide Hirasawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE