Granted Patent
Utility
US 5,973,154 · App. 09/303,967
Process for the preparation of chiral imidazolinone herbicides
Inventors:
Thomas Walter Drabb, Peter J. Wepplo
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: May 3, 1999
Inventors
Thomas Walter Drabb
Peter J. Wepplo
Assignee (at issue)
American Cyanamid Company
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.