Granted Patent
Utility
US 4,544,646 · App. 06/590,157
Olefin polymerization catalyst and method
Inventors:
Thomas J. Pullukat, Raymond E. Hoff
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Mar 16, 1984
Inventors
Thomas J. Pullukat
Raymond E. Hoff
Assignee (at issue)
Chemplex, 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.