US Patent 7691197 Method of preparing yellow pigments

Patent 7691197 was granted and assigned to Cabot Corporation on April, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Cabot Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76911970

Patent Inventor Names

Alexander I. Shakhnovich0

Date of Patent

April 6, 2010

Patent Application Number

115841080

Date Filed

October 20, 2006

Patent Primary Examiner

‌

Anthony J Green

Patent abstract

The present invention relates to a method of preparing a yellow pigment comprising an asymmetric quinolonoquinolone in an amount greater than 50% by weight of the yellow pigment. Also disclosed are modified yellow pigments comprising this yellow pigment having attached at least one organic group as well as inkjet ink compositions comprising the yellow pigments or the modified yellow pigments.