Granted Patent
Utility
US 4,736,002 · App. 06/880,456
Novel propylene polymerization process
Inventors:
George C. Allen, Brian J. Pellon, Michael P. Hughes
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Jun 30, 1986
Inventors
George C. Allen
Brian J. Pellon
Michael P. Hughes
Assignee (at issue)
El Paso 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.