Granted Patent
Utility
US 5,250,721 · App. 07/805,216
Method for stabilization of crude acetonitrile as oxidation or ammoxidation feed
Inventors:
Mark C. Cesa, Mark R. Bruce
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Dec 11, 1991
Inventors
Mark C. Cesa
Mark R. Bruce
Assignee (at issue)
The Standard Oil 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.