Granted Patent
Utility
US 6,365,136 · App. 09/497,581
Compositions for removing or lightening hair color
Inventors:
Dirk Lauscher, Herbert Deutz, Gabriele Hess, Helga Kreher, Petra Braun, Joerg Schmidt
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Feb 3, 2000
Inventors
Dirk Lauscher
Herbert Deutz
Gabriele Hess
Helga Kreher
Petra Braun
Joerg Schmidt
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.