Granted Patent
Utility
US 4,656,017 · App. 06/756,799
Pyridine phosphonitrilic halide trimer process
Inventors:
Harry R. Allcock, S. James Stinnett, Joseph B. Tedder, Jr., J. Robert Adams, Jr.
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Jul 19, 1985
Inventors
Harry R. Allcock
S. James Stinnett
Joseph B. Tedder, Jr.
J. Robert Adams, Jr.
Assignee (at issue)
Ethyl Corporation
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.