Granted Patent
Utility
US 4,380,503 · App. 06/269,844
Process for preparing oil-in-water emulsion
Inventors:
Gotz Koerner, Gerd Sanger, Hans-Ferdi Fink, Friedhelm Grassmann
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: Jun 3, 1981
Inventors
Gotz Koerner
Gerd Sanger
Hans-Ferdi Fink
Friedhelm Grassmann
Assignee (at issue)
Th. Goldschmidt. AG
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.