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:
Sep. 21, 1976
Filed:
Jun. 25, 1973
Applicant:
Inventors:
Assignee:
L'Oreal, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8 11 ; 8 10 ; 8 101 ; 8 102 ; 8 19 ; 8 25 ; 8 32 ; 8 79 ; 8 93 ;
Abstract
A process for producing a dye in powder form involves reacting an oxidation agent with an oxidation base in an aqueous alkaline medium, preferably an ammoniacal medium, having a pH ranging from 8 to 13, in the presence of an organic solvent for the dye being produced, at a temperature and during a period of time allowing at least a partial oxidation, preferably between 15.degree.-30.degree.C for a period of about 5 minutes to 30 hours and lyophilizing the resulting reaction product. The resulting dye can be used to color keratinic fibers, especially human hair.
Quick Actions:
Ghilardi, Giuliana. (1976). Lyophilized dyes and the use thereof to color keratinic fibers (U.S. Patent No. 3981678). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3981678
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile