Granted Patent
Utility
US 6,221,809 · App. 09/319,294
Herbicidal compositions comprising N-[(4,6-dimethoxypyridin-2-yl)aminocarbonyl]-5-methylsulphonamidomethyl-2- alkoxycarbonylbenzene sulphonamides
Inventors:
Erwin Hacker, Hermann Bieringer, Klaus Lorenz
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Oct 11, 1999
Inventors
Erwin Hacker
Hermann Bieringer
Klaus Lorenz
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.