Granted Patent
Utility
US 4,247,418 · App. 06/086,222
Polymerization catalyst and process for polymerizing dienes therewith
Inventors:
Adel Farhan Halasa, James E. Hall
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Oct 18, 1979
Inventors
Adel Farhan Halasa
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.