Granted Patent
Utility
US 4,225,567 · App. 05/739,212
Solution polymerization of chlorophosphazene with sulfur modifier
Inventors:
Adel Farhan Halasa, James E. Hall
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Nov 5, 1976
Inventors
Adel Farhan Halasa
James E. Hall
Assignee (at issue)
The Firestone Tire & Rubber 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.