Photochromatic pyrano-1,3-oxazinonaphthalene derivatives

United States of America Patent

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Aug 28, 2007
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app pub date
Apr 19, 2001
filing date
Apr 20, 2000

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Expired

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Abstract

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Photochromatic compounds belonging to the groups of chromenes and spiro-pyrans having general formula (I) ##STR00001##

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Patent Owner	Address
GREAT LAKES CHEMICAL (EUROPE) GMBH	THE SWISS CITY OF FOLAOENFEIERDE FRAUENFELD THURGAU

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C07D:HETEROCYCLIC COMPOUNDS

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[Patents Count]

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Inventor Name	Address	# of filed Patents	Total Citations
Crisci, Luciana	Graffignana, IT	12	110
Giroldini, William	San Donato Milanese, IT	9	42
Malatesta, Vincenzo	San Maurizio al Lambro, IT	13	63

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Photochromatic pyrano-1,3-oxazinonaphthalene derivatives

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10257408

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US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 28, 2007	US,7262294,B2 US7262294B2	GRANTED PATENT AS SECOND PUBLICATION
September 04, 2003	US,20030164482,A1 US20030164482A1	FIRST PUBLISHED PATENT APPLICATION

PATENT NO	7262294
SERIAL NO	10257408
DOCKET NO

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10257408

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