Granted Patent
Utility
US 4,882,378 · App. 07/222,385
High performance rubber compositions
Inventor:
Glenn R. Himes
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Jul 21, 1988
Inventor
Glenn R. Himes
Assignee (at issue)
SHELL OIL 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.