Granted Patent
Utility
US 5,155,079 · App. 07/712,206
Multiple site olefin polymerization catalysts
Inventors:
Leonard V. Cribbs, Michael W. Lynch
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Jun 7, 1991
Inventors
Leonard V. Cribbs
Michael W. Lynch
Assignee (at issue)
Quantum Chemical Corporation
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.