Granted Patent
Utility
US 5,045,577 · App. 07/369,428
Process for the preparation of heat-stable olefin polymers
Inventors:
Rolf Mulhaupt, Paul Dubs
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Jun 21, 1989
Inventors
Rolf Mulhaupt
Paul Dubs
Assignee (at issue)
Ciba-Geigy
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.