Granted Patent
Utility
US 4,280,927 · App. 06/153,477
Polymerization catalyst and process for polymerizing dienes therewith
Inventor:
Delmar F. Lohr, Jr.
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: May 27, 1980
Inventor
Delmar F. Lohr, Jr.
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.