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:
Sep. 05, 2006
Filed:
Nov. 12, 2004
Applicants:
Yingxia He, Wilmington, DE (US);
Colin Campbell, Claymont, DE (US);
Gordian Schilling, Newark, DE (US);
Rhonda Carter, Bear, DE (US);
Inventors:
Yingxia He, Wilmington, DE (US);
Colin Campbell, Claymont, DE (US);
Gordian Schilling, Newark, DE (US);
Rhonda Carter, Bear, DE (US);
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 48/00 (2006.01); C09D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9-dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.