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:
Jan. 17, 2006
Filed:
Jan. 07, 2004
Applicants:
Damien Thurber Cole, Drexel Hill, PA (US);
Suruliappa Gowder Jeganathan, Chadds Ford, PA (US);
Yingxia He, Wilmington, DE (US);
Inventors:
Damien Thurber Cole, Drexel Hill, PA (US);
Suruliappa Gowder Jeganathan, Chadds Ford, PA (US);
Yingxia He, Wilmington, DE (US);
Assignee:
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01); C07D 471/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the synthesis of beta-quinacridone by oxidation in the presence of selected additives that promote the formation of the desired crystal phase and particle size.