Granted Patent
Utility
US 4,226,952 · App. 06/068,281
Thermoplastic elastomer blends of alpha-olefin polymers and hydrogenated medium and high vinyl butadiene polymers
Inventors:
Adel Farhan Halasa, David W. Carlson, James E. Hall
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Aug 20, 1979
Inventors
Adel Farhan Halasa
David W. Carlson
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.