Granted Patent
Utility
US 6,740,128 · App. 10/019,204
Agent for coloring fibers
Inventors:
Manuela Javet, Catherine Mueller
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Dec 20, 2001
Inventors
Manuela Javet
Catherine Mueller
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.