Granted Patent
Utility
US 5,399,540 · App. 08/017,120
ZR/V multi-site olefin polymerization catalyst
Inventors:
Chi-I Kuo, Michael W. Lynch
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Feb 12, 1993
Inventors
Chi-I Kuo
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.