Granted Patent
Utility
US 6,174,849 · App. 09/297,450
Water-free surfactant mixtures containing alcohol sulfates
Inventors:
Karl Schmid, Ditmar Kischkel, Thomas Krohnen, Andreas Syldath
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Apr 30, 1999
Inventors
Karl Schmid
Ditmar Kischkel
Thomas Krohnen
Andreas Syldath
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.