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Sakashi Ootaki
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Tsurugashima, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical pickup, aberration correction unit and astigmatism measurem...
Patent number
6,151,154
Issue date
Nov 21, 2000
Pioneer Electronic Corporation
Masakazu Ogasawara
G02 - OPTICS
Information
Patent Grant
Wave-front aberration compensation unit, wave-front aberration comp...
Patent number
6,078,554
Issue date
Jun 20, 2000
Pioneer Electronic Corporation
Sakashi Ootaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical write/read head with a pretilted liquid crystal panel
Patent number
5,949,748
Issue date
Sep 7, 1999
Pioneer Electronic Corporation
Masayuki Iwasaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup with aberration correcting panel including a liquid...
Patent number
5,936,923
Issue date
Aug 10, 1999
Pioneer Electronic Corporation
Sakashi Ootaki
G02 - OPTICS
Information
Patent Grant
Optical pickup used with both DVD and CD
Patent number
5,901,131
Issue date
May 4, 1999
Pioneer Electronic Corporation
Sakashi Ootaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup used with both DVD and CD
Patent number
5,734,637
Issue date
Mar 31, 1998
Pioneer Electronic Corporation
Sakashi Ootaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup device
Patent number
5,673,246
Issue date
Sep 30, 1997
Pioneer Electronic Corporation
Sakashi Ootaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Reflection type liquid crystal display apparatus which prevents rot...
Patent number
5,459,593
Issue date
Oct 17, 1995
Pioneer Electronic Corporation
Sakashi Ootaki
G02 - OPTICS
Information
Patent Grant
Photo-conductive liquid crystal light valve
Patent number
5,009,490
Issue date
Apr 23, 1991
Pioneer Electronic Corp.
Tomomitsu Kouno
G02 - OPTICS