Granted Patent
Utility
US 6,773,463 · App. 10/110,116
Agent and method for dyeing keratin fibers
Inventors:
Cecile Pasquier, Véronique Charrière, Hans-Jurgen Braun
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Apr 5, 2002
Inventors
Cecile Pasquier
Véronique Charrière
Hans-Jurgen Braun
Assignee (at issue)
Wella GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.