Photochromatic pyrano-1,3-oxazinonaphthalene derivatives

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United States of America Patent

PATENT NO 7262294
SERIAL NO

10257408

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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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GREAT LAKES CHEMICAL (EUROPE) GMBH8500 FRAUENFELD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Crisci, Luciana Graffignana, IT 12 98
Giroldini, William San Donato Milanese, IT 9 38
Malatesta, Vincenzo San Maurizio al Lambro, IT 13 60

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