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:
May. 01, 2007
Filed:
Mar. 23, 2005
Applicant:
Osamu Shiromaru, Tokyo, JP;
Inventor:
Osamu Shiromaru, Tokyo, JP;
Assignee:
Toyo Ink Mfg. Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the production of an ε crystal form copper phthalocyanine, which process comprises heat-treating a copper phthalocyanine in a solvent at from 80° C. to 250° C. in the presence of a Lewis acid.