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Kenichiro Urairi
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Yawata-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Apparatus for driving an objective lens utilizing flexible arms and...
Patent number
6,747,921
Issue date
Jun 8, 2004
Matsushita Electric Industrial Co., Ltd.
Kanji Wakabayashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Correction element of lower light intensity around an optical axis...
Patent number
5,920,537
Issue date
Jul 6, 1999
Matsushita Electric Industrial Co., Ltd.
Yoshiaki Komma
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical head for reproducing data from first and second optical disks
Patent number
5,912,868
Issue date
Jun 15, 1999
Matsushita Electric Industrial Co., Ltd.
Hideki Hayashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Correction elements to lower light intensity around an optical axis...
Patent number
5,754,512
Issue date
May 19, 1998
Matsushita Electric Industrial Co., Ltd.
Yoshiaki Komma
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical head and optical data recording and reproducing apparatus h...
Patent number
5,703,856
Issue date
Dec 30, 1997
Matsushita Electric Industrial Co., Ltd.
Hideki Hayashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Objective actuator
Patent number
5,416,640
Issue date
May 16, 1995
Matsushita Electric Industrial Co., Ltd.
Yasumasa Shibata
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
Apparatus for driving an objective lens
Publication number
20030174596
Publication date
Sep 18, 2003
Kanji Wakabayashi
G11 - INFORMATION STORAGE