Granted Patent
Utility
US 5,036,147 · App. 07/580,764
Propylene polymerization method
Inventors:
Craig C. Meverden, Thomas J. Pullukat
Patented Case
View Patent ↗
Granted: Jul 30, 1991
Filed: Sep 11, 1990
Inventors
Craig C. Meverden
Thomas J. Pullukat
Assignee (at issue)
Quantum Chemical 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.