Granted Patent
Utility
US 5,723,409 · App. 08/430,343
Intermediates for the preparation of phenylsulfonylurea herbicides and plant growth regulators
Inventors:
Gerhard Schnabel, Lothar Willms, Klaus Bauer, Hermann Bieringer
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Apr 28, 1995
Inventors
Gerhard Schnabel
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.