US Patent 7871446 Disperse azo dyestuffs

Patent 7871446 was granted and assigned to Dystar on January, 2011 by the United States Patent and Trademark Office.

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Date of Patent

January 18, 2011

Patent Application Number

12514232

Date Filed

November 2, 2007

Patent Primary Examiner

Patent abstract

A dyestuff of the formula (I)

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