Granted Patent
Utility
US 6,492,301 · App. 09/353,701
Herbicidal compositions with substituted phenylsulfonylureas for controlling weeds in rice
Inventors:
Erwin Hacker, Hermann Bieringer
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Jul 14, 1999
Inventors
Erwin Hacker
Hermann Bieringer
Assignee (at issue)
Hoechst Schering Agrevo 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.