Granted Patent
Utility
US 5,856,478 · App. 08/752,031
Anellated (oxa)hydantoins and their use as herbicides
Inventors:
Matthias Schafer, Helmut Baier, Karlheinz Drauz, Hans-Peter Krimmer, Sabine Landmann
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Nov 19, 1996
Inventors
Matthias Schafer
Helmut Baier
Karlheinz Drauz
Hans-Peter Krimmer
Sabine Landmann
Assignee (at issue)
Degussa 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.