Granted Patent
Utility
US 4,357,458 · App. 06/203,097
Process for preparing polyphosphazene polymers containing fluoroalkoxy and/or aryloxy substituents
Inventors:
Thomas A. Antkowiak, David J. Serbin
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: Nov 3, 1980
Inventors
Thomas A. Antkowiak
David J. Serbin
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.