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. 20, 1981
Filed:
May. 30, 1978
Applicant:
Inventors:
Gregoire Kalopissis, Paris, FR;
Andree Bugaut, Boulogne-sur-Seine, FR;
Francoise Estradier, Paris, FR;
Assignee:
L'Oreal, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2603 / ; 424 47 ; 424 70 ; 424 71 ; 424D / ; 424D / ; 8405 ; 8414 ; 8435 ;
Abstract
A two-stage process for producing indoanilines includes oxidizing in a first stage a paraphenylene diamine to a quinone diimine and in a second stage condensing the said quinone diimine with a phenolic compound. The resulting indoanilines can be incorporated into a dye composition for keratinous fibers, especially, human hair.
Kalopissis, Gregoire. (1981). Quinonediimine intermediates for indoanilines (U.S. Patent No. 4246181). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4246181
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile