Granted Patent
Utility
US 4,284,527 · App. 06/087,702
Polymerization catalyst
Inventors:
Thomas J. Pullukat, Mitsuzo Shida
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Oct 24, 1979
Inventors
Thomas J. Pullukat
Mitsuzo Shida
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.