Granted Patent
Utility
US 4,418,167 · App. 06/303,242
Thermoplastic elastomer blends with bitumen
Inventors:
Georg G. A. Bohm, Lee E. Vescelius, Gary R. Hamed
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Sep 17, 1981
Inventors
Georg G. A. Bohm
Lee E. Vescelius
Gary R. Hamed
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.