Granted Patent
Utility
US 4,845,155 · App. 07/045,750
Elastomer grafted with polymer matrix and method
Inventor:
Barry D. Dean
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Apr 30, 1987
Inventor
Barry D. Dean
Assignee (at issue)
Arco Chemical Technology, L.P.
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.