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:
Dec. 16, 1980
Filed:
Feb. 14, 1979
Applicant:
Inventor:
Daniel Pigasse, Chantilly, FR;
Assignee:
Produits Chimiques Ugine Kuhlmann, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
2603145 ; 1062 / ;
Abstract
A process for the preparation of phthalocyanine pigments from a phthalocyanine press paste obtained by hydrolysis of a sulphuric solution of phthalocyanine, in which a small quantity of a water-insoluble crystallizing solvent, in the presence or absence of a non-crystallizing solvent, is incorporated with stirring in said press paste, and then the solvent or solvents is or are eliminated and the paste is dried, and the pigments thus obtained are collected.
Pigasse, Daniel. (1980). Process for the preparation of phthalocyanine pigments (U.S. Patent No. 4239685). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4239685
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile