Granted Patent
Utility
US 4,828,764 · App. 07/064,268
N-Fluoro-N-Perfluoromethyl sulfonamides
Inventor:
Darryl D. Desmarteau
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Jun 18, 1987
Inventor
Darryl D. Desmarteau
Assignee (at issue)
AGRESEARCH LIMITED
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.