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:
Apr. 28, 1987
Filed:
Feb. 06, 1986
Applicant:
Inventors:
Assignee:
Ruetgerswerke Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8409 ; 8423 ;
Abstract
New coupling or shading (nuance) components are described which in combination with pertinent developers are used for dyeing of hair. These coupling components are dinitropyridine derivatives of the general formula: ##STR1## whereby the substituents X, Y, R.sub.1 and R.sub.2 have the meaning given.
Orth, Winfred. (1987). Hair dyeing agents (U.S. Patent No. 4661115). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4661115
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile