The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 1989
Filed:
Jan. 19, 1988
Applicant:
Inventors:
Thomas E Donegan, Holland, MI (US);
Timothy G Leary, Grand Haven, MI (US);
Arvind S Patil, Williamsburg, VA (US);
Assignee:
BASF Corporation, Parsippany, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
540136 ; 540140 ; 540141 ;
Abstract
Alpha-phase phthalocyanine pigment crystals are produced as substantially 100 percent isometric crystals by first activating a phthalocyanine pigment crude, followed by combining the activated crude with water and a surfactant, whereby a mixture is formed. The mixture is then milled so that a pigment slurry is formed.