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Yoshiharu Takane
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Iruma-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Liquid crystal optical element and optical pickup apparatus
Patent number
8,891,034
Issue date
Nov 18, 2014
Citizen Holdings Co., Ltd.
Yoshiharu Takane
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical pickup apparatus and liquid crystal optical element
Patent number
8,098,352
Issue date
Jan 17, 2012
Citizen Holdings Co., Ltd.
Naoki Fujii
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
LIQUID CRYSTAL OPTICAL ELEMENT AND OPTICAL PICKUP APPARATUS
Publication number
20090244411
Publication date
Oct 1, 2009
Yoshiharu TAKANE
G02 - OPTICS
Information
Patent Application
Optical pickup apparatus and liquid crystal optical element
Publication number
20070211185
Publication date
Sep 13, 2007
CITIZEN WATCH CO., LTD.
Naoki Fujii
G02 - OPTICS