Granted Patent
Utility
US 4,223,103 · App. 06/015,378
Polyphosphazene polymers containing substituents derived from thienyl alcohols
Inventors:
Donald N. Schulz, Jung W. Kang
Patented Case
View Patent ↗
Granted: Sep 16, 1980
Filed: Feb 26, 1979
Inventors
Donald N. Schulz
Jung W. Kang
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.