Granted Patent
Utility
US 5,859,278 · App. 08/996,945
Method for preparing cyanophosphonate derivatives from pyrophosphate or polyphosphate esters and cyanide
Inventors:
Patrick J. Lennon, Sergey G. Vulfson
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Dec 23, 1997
Inventors
Patrick J. Lennon
Sergey G. Vulfson
Assignee (at issue)
Monsanto 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.