Granted Patent
Utility
US 6,239,306 · App. 09/241,213
Phenylsulfonylureas, processes for their preparation, and their use as herbicides and plant growth regulations
Inventors:
Klaus Lorenz, Lothar Willms, Klaus Bauer, Hermann Bieringer
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Feb 1, 1999
Inventors
Klaus Lorenz
Lothar Willms
Klaus Bauer
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.