Granted Patent
Utility
US 4,359,403 · App. 06/253,732
Polymerization catalyst and method
Inventors:
Raymond E. Hoff, Thomas J. Pullukat, Mitsuzo Shida
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: Apr 13, 1981
Inventors
Raymond E. Hoff
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.