Granted Patent
Utility
US 4,499,198 · App. 06/433,369
Polymerization catalysts and methods
Inventors:
Thomas J. Pullukat, Raymond E. Hoff, Michael W. Lynch
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Oct 7, 1982
Inventors
Thomas J. Pullukat
Raymond E. Hoff
Michael W. Lynch
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.