Granted Patent
Utility
US 5,135,995 · App. 07/596,141
Polyolefin catalysts and method of preparing an olefin polymer
Inventors:
Gregory A. Cook, Theodore R. Engelmann
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Oct 11, 1990
Inventors
Gregory A. Cook
Theodore R. Engelmann
Assignee (at issue)
Paxon Polymer Company, 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.