Granted Patent
Utility
US 5,001,171 · App. 07/260,631
Process, modified rubbers and rubber compositions
Inventors:
Georg G. A. Bohm, Daniel F. Graves
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Oct 21, 1988
Inventors
Georg G. A. Bohm
Daniel F. Graves
Assignee (at issue)
Bridgestone Firestone
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.