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. 15, 2005
Filed:
May. 04, 2004
Mu-ill Lim, Trumbull, CT (US);
Yuh-guo Pan, Stamford, CT (US);
Gottfried Wenke, Woodbridge, CT (US);
Mu-Ill Lim, Trumbull, CT (US);
Yuh-Guo Pan, Stamford, CT (US);
Gottfried Wenke, Woodbridge, CT (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):wherein X is selected from halogen and RSOwhere the halogen is preferably Cl, Br or I; R, Rand Rare each individually selected from Cto Calkyl and Cto Cmono or dihydroxyalkyl, or two of R, Rand Rtogether with the nitrogen atom to which they are attached form a Cto Csaturated or unsaturated ring optionally containing in the ring one or more additional hetero atoms selected from O, S and N atoms; Rand Rare each individually selected from Cto Calkyl, Cto Chydroxyalkyl, Cto Calkoxy, Cto Caminoalkyl or Rand Rtogether form a Cto Calkylene group; and Ris selected from Cto Calkyl and Cto Cmono or dihydroxyalkyl.