Granted Patent
Utility
US 6,693,156 · App. 09/831,960
Methylene bridged metallocenes as olefin-polymerization-catalyst components
Inventor:
Luigi Resconi
Patented Case
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Granted: Feb 17, 2004
Filed: May 16, 2001
Inventor
Luigi Resconi
Assignee (at issue)
Basell Polyolefine GmbH
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.