Granted Patent
Utility
US 5,763,355 · App. 08/871,905
Anellated (OXA) hydantoines and their use as herbicides
Inventors:
Matthias Schafer, Karlheinz Drauz
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Jun 12, 1997
Inventors
Matthias Schafer
Karlheinz Drauz
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.