Optical glass, precision press-molding preform, process for producing the preform, optical element and process for producing the element

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Nov 9, 2010
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Jun 23, 2009
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Nov 15, 2004

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as a refining agent, and having a refractive index (nd) of 1.8 or more and an Abbe's number (νd) of 35 or less.

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HOYA CORPORATION

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Inventor Name	Address	# of filed Patents	Total Citations
Kasuga, Yoshiko	Koganei, JP	14	129
Zou, Xuelu	Akishima, JP	89	1513

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Optical glass, precision press-molding preform, process for producing the preform, optical element and process for producing the element

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United States of America Patent

12457821

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DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
November 09, 2010	US,7827823,B2 US7827823B2	GRANTED PATENT AS SECOND PUBLICATION
November 26, 2009	US,20090288450,A1 US20090288450A1	FIRST PUBLISHED PATENT APPLICATION

PATENT NO	7827823
SERIAL NO	12457821
DOCKET NO

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12457821

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