Granted Patent
Utility
US 6,472,341 · App. 09/659,694
Polymerization catalysts
Inventors:
Brian Stephen Kimberley, David W. Pratt
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Sep 11, 2000
Inventors
Brian Stephen Kimberley
David W. Pratt
Assignee (at issue)
BP Chemicals Limited
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.