Granted Patent
Utility
US 4,808,720 · App. 07/021,811
Certain 3-benzoyl-4-oxolactams
Inventor:
Jeff K. Curtis
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Mar 13, 1987
Inventor
Jeff K. Curtis
Assignee (at issue)
Stauffer Chemical 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.