Granted Patent
Utility
US 4,267,282 · App. 05/943,566
Minimizing feed problems and reducing residual acrylonitrile monomer in processing nitrile polymers
Inventor:
Edward F. Tokas
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Sep 18, 1978
Inventor
Edward F. Tokas
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.