Granted Patent
Utility
US 4,806,322 · App. 07/122,311
Process for the production of linear polyphosphazenes
Inventors:
William L. Hergenrother, James Oziomek
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Nov 16, 1987
Inventors
William L. Hergenrother
James Oziomek
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.