Granted Patent
Utility
US 6,200,922 · App. 08/869,761
Catalyst systems of the Ziegler-Natta type
Inventors:
Stephan Huffer, Wolfgang Bidell, Patrik Müller, Ulrich Moll, Roland Hingmann, Gunther Schweier
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Jun 5, 1997
Inventors
Stephan Huffer
Wolfgang Bidell
Patrik Müller
Ulrich Moll
Roland Hingmann
Gunther Schweier
Assignee (at issue)
BASF SE
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.