Granted Patent
Utility
US 4,198,265 · App. 05/855,862
Method of removing volatiles from an elastomer
Inventor:
Charles R. Johnson
Patented Case
View Patent ↗
Granted: Apr 15, 1980
Filed: Nov 30, 1977
Inventor
Charles R. Johnson
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.