Granted Patent
Utility
US 5,208,294 · App. 07/718,179
Hydrogenated nitrile vulcanizates
Inventor:
Trevor A. Brown
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jun 20, 1991
Inventor
Trevor A. Brown
Assignee (at issue)
Polysar Rubber Corporation
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.