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:
Oct. 12, 1976
Filed:
Jun. 11, 1974
Applicant:
Inventors:
Jean-Claude Rene Nicaise, Creil, FR;
Louis Antoine Cabut, Nogent sur Oise, FR;
Assignee:
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
2603145 ; 1062 / ;
Abstract
A process for the preparation of copper phthalocyanine which comprises heating 4 moles of phthalodinitrile with about 1 mole of cuprous chloride at a temperature of from 140.degree. to 300.degree.C. in the presence of 10% to 30%, with respect to the weight of phthalodinitrile, of an ammonium salt which decomposes at a temperature of from 30.degree. to 200.degree.C. with the liberation of ammonia; and copper phthalocyanine prepared by this process.
Nicaise, Jean-Claude. (1976). Process for the preparation of copper phthalocyanine (U.S. Patent No. 3985767). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3985767
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile