Granted Patent
Utility
US 5,494,938 · App. 08/039,467
Oil-in-water emulsions
Inventors:
Rolf Kawa, Achim Ansmann, Manfred Weuthen, Holger Tesmann, Thomas Foerster
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Apr 26, 1993
Inventors
Rolf Kawa
Achim Ansmann
Manfred Weuthen
Holger Tesmann
Thomas Foerster
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.