Granted Patent
Utility
US 4,143,099 · App. 05/684,982
Method of preparing a thermoplastic elastomeric blend of monoolefin copolymer rubber and polyolefin resin
Inventor:
David J. Duncan
Patented Case
View Patent ↗
Granted: Mar 6, 1979
Filed: May 10, 1976
Inventor
David J. Duncan
Assignee (at issue)
Uniroyal Ltd.
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.