Granted Patent
Utility
US 5,494,658 · App. 08/317,030
Antidandruff agents and cosmetic preparations
Inventors:
Heinz Hanel, Waltraud Simsch, Alwin Reng
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Oct 3, 1994
Inventors
Heinz Hanel
Waltraud Simsch
Alwin Reng
Assignee (at issue)
Hoechst 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.