Granted Patent
Utility
US 5,869,423 · App. 08/669,478
Oil-in-water emulsions
Inventors:
Gerhard Frisch, Zoltan Damo
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Sep 5, 1996
Inventors
Gerhard Frisch
Zoltan Damo
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.