Granted Patent
Utility
US 6,033,652 · App. 08/857,442
Hair-treatment formulations
Inventor:
Achim Ansmann
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: May 15, 1997
Inventor
Achim Ansmann
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.