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. 05, 1989
Filed:
Jul. 26, 1988
L'Oreal, Paris, FR;
Abstract
A 2-nitro metaphenylenediamine for use in dyeing keratinous fibers, in particular human hair, has the formula: ##STR1## wherein Z represents a --O--, --S-- or --NH-- radical. R.sub.1, R.sub.2 and R.sub.3 may be identical or different and represent a hydrogen atom or an alkyl, hydroxyalkyl, polyhydroxyalkyl, alkoxyalkyl or hydroxyalkoxyalkyl radical or an aminoalkyl radical whose amino radical may be mono- or disubstituted by an alkyl or hydroxyalkyl radical. The alkyl and alkoxy radicals contain 1 to 6 carbon atoms. Cosmetically acceptable salts of this compound may also be used.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile