Granted Patent
Utility
US 6,511,940 · App. 09/337,135
Combination of herbicides and safeners
Inventors:
Frank Ziemer, Lothar Willms, Hermann Bieringer, Erwin Hacker
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Jun 21, 1999
Inventors
Frank Ziemer
Lothar Willms
Hermann Bieringer
Erwin Hacker
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.