Granted Patent
Utility
US 6,693,157 · App. 10/117,903
Olefin polymerization catalysts containing triquinane ligands
Inventor:
Jonathan L. Schuchardt
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Apr 8, 2002
Inventor
Jonathan L. Schuchardt
Assignee (at issue)
Equistar Chemicals, LP
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.