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Kazumi Takahashi
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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical pickup device with protrusions in a laser beam direction to...
Patent number
8,448,197
Issue date
May 21, 2013
Hitachi Media Electronics Co., Ltd.
Hiroaki Furuichi
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device having disc protector
Patent number
8,400,889
Issue date
Mar 19, 2013
Hitachi Media Electronics Co., Ltd.
Masayuki Okamura
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device in which optical part is fixedly joined to pi...
Patent number
8,395,981
Issue date
Mar 12, 2013
Hitachi Media Electronics Co., Ltd.
Satoshi Arai
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device and optical disk drive apparatus
Patent number
8,307,381
Issue date
Nov 6, 2012
Hitachi Media Electronics Co., Ltd.
Yoshio Oozeki
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device and method of manufacture therefor
Patent number
8,169,875
Issue date
May 1, 2012
Hitachi Media Electronics Co., Ltd.
Hiroaki Furuichi
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device
Patent number
7,990,813
Issue date
Aug 2, 2011
Hitachi Media Electronics Co., Ltd.
Rika Nomura
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device and optical disc drive apparatus
Patent number
7,873,970
Issue date
Jan 18, 2011
Hitachi Media Electronics Co., Ltd.
Satoshi Arai
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device and optical disc drive
Patent number
7,739,703
Issue date
Jun 15, 2010
Hitachi Media Electronics Co., Ltd.
Satoshi Arai
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method and apparatus for forming color image
Patent number
6,606,472
Issue date
Aug 12, 2003
Hitachi, Ltd.
Akira Mori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL PICKUP DEVICE
Publication number
20100322061
Publication date
Dec 23, 2010
Hitachi Media Electronics Co., Ltd.
Masayuki Okamura
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE
Publication number
20100243873
Publication date
Sep 30, 2010
Hitachi Media Electronics Co., Ltd.
Rika NOMURA
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE AND METHOD FOR MANUFACTURING THE SAME
Publication number
20100162281
Publication date
Jun 24, 2010
Hitachi Media Electronics Co., Ltd.
Hiroaki FURUICHI
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE AND OPTICAL DISK DRIVE APPARATUS
Publication number
20100002561
Publication date
Jan 7, 2010
Yoshio OOZEKI
G11 - INFORMATION STORAGE
Information
Patent Application
Optical Pickup Device and Method of Manufacture Therefor
Publication number
20090323498
Publication date
Dec 31, 2009
Hiroaki Furuichi
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE
Publication number
20090129239
Publication date
May 21, 2009
Satoshi Arai
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE APPARATUS
Publication number
20080052734
Publication date
Feb 28, 2008
Satoshi Arai
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE
Publication number
20070183273
Publication date
Aug 9, 2007
Satoshi ARAI
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL