Optical pickup apparatus and optical element

United States of America Patent

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Dec 21, 2010
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Jul 21, 2006
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Sep 5, 2002

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Abstract

generated by the diffractive optical element respectively, wherein one of m, n and k is different from one of other two numbers.

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Patent Owner	Address
KONICA CORPORATION	26-2 NISHISHINJUKU 1-CHOME SHINJUKU-KU TOKYO 163-0512

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G11B:INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BET....

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Inventor Name	Address	# of filed Patents	Total Citations
Atarashi, Yuichi	Hachioji, JP	84	663
Ikenaka, Kiyono	Hino, JP	60	245

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Optical pickup apparatus and optical element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

11490808

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DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
December 21, 2010	US,7855945,B2 US7855945B2	GRANTED PATENT AS SECOND PUBLICATION
November 16, 2006	US,20060256673,A1 US20060256673A1	FIRST PUBLISHED PATENT APPLICATION

PATENT NO	7855945
SERIAL NO	11490808
DOCKET NO

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11490808

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