Granted Patent
Utility
US 4,859,757 · App. 07/184,225
Novel propylene polymers
Inventors:
Brian J. Pellon, George C. Allen, Michael P. Hughes
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Apr 21, 1988
Inventors
Brian J. Pellon
George C. Allen
Michael P. Hughes
Assignee (at issue)
Rexene Products 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.