Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Veronica L. Chambers0
Edward H. Sung0
George H. Robertson0
Date of Patent
October 3, 2006
Patent Application Number
11068138
Date Filed
February 28, 2005
Patent Primary Examiner
Patent abstract
A process for the manufacture of a transparent Pigment Yellow 155 or transparent Pigment Yellow 180 is disclosed, said process includes grinding particles of said pigment in the presence of a grinding agent until said particles achieve a surface area of at least about 40 m2/g.
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