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:
Apr. 30, 2002
Filed:
Mar. 08, 2000
Applicant:
Inventors:
Michael J. Willis, Cincinnati, OH (US);
Paul A. Merchak, Loveland, OH (US);
Russell J. Schwartz, Cincinnati, OH (US);
Karii L. MacCune, Cincinnati, OH (US);
Assignee:
Sun Chemical Corporation, Fort Lee, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 4/704 ;
U.S. Cl.
CPC ...
C09B 4/704 ;
Abstract
A process for the preparation of &bgr; phase copper phthalocyanine pigment which includes dry grinding crude copper phthalocyanine in the absence of a grinding aid to obtain a crude mill; and conditioning the crude mill in about 5 to 50 wt. % based on the weight of the crude mill of a conditioning solvent.