Granted Patent
Utility
US 6,586,545 · App. 10/027,143
Complexes based on four-membered cyclic anionic six-electron-donor ligands
Inventor:
Sandor Nagy
Patented Case
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Granted: Jul 1, 2003
Filed: Dec 20, 2001
Inventor
Sandor Nagy
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.