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:
Feb. 20, 1996
Filed:
Jan. 05, 1990
Applicant:
Inventors:
Bryan P Murphy, Monroe, CT (US);
Keith C Brown, New Canaan, CT (US);
Thomas M Schultz, Highland Mills, NY (US);
Alice A Meyer, Danbury, CT (US);
Assignee:
Clairol Incorporated, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8423 ; 8406 ; 8409 ; 424 47 ;
Abstract
A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under substantially anaerobic condition and the products made by such process.