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:
Oct. 11, 1988
Filed:
Nov. 21, 1986
Applicant:
Inventors:
James Carroll, Cambridge, MA (US);
Cynthia D Millis, Vancouver, CA;
Walter C Herlihy, Beverly, MA (US);
Assignee:
Repligen Corporation, Cambridge, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
8423 ; 8405 ; 8406 ; 8409 ; 8429 ; 424 59 ; 424 63 ;
Abstract
The invention concerns a new system to dye hair and/or skin. The system comprises the use of a hydroxyindole dye precursor and sodium periodate. Advantageously, this dye system allows the dye to penetrate inside the hair fiber without coating the hair shaft and, thus, give a more pleasing and stable dye result.