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:
Jul. 04, 2006
Filed:
May. 03, 2004
Applicants:
Mu-ill Lim, Trumbull, CT (US);
Yuh-guo Pan, Stamford, CT (US);
Inventors:
Mu-Ill Lim, Trumbull, CT (US);
Yuh-Guo Pan, Stamford, CT (US);
Assignee:
The Procter & Gamble Company, Cincinati, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K 7/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):wherein Rand Rare each independently selected from hydrogen atoms, a Cto Calkyl or hydroxyalkyl group, or Rand Rtogether with the nitrogen atom to which they are attached form a 5 or 6 member cyclic ring optionally containing one or more additional atoms selected from O, N or S atoms, and n is equal to 1 or 2, with the proviso that when n is equal to 2 only one of Rand Rmay be hydrogen.