Granted Patent
Utility
US 5,332,707 · App. 07/923,036
Olefin polymerization and copolymerization catalyst
Inventors:
Nicholas M. Karayannis, Steven A. Cohen, Julie L. Ledermann
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Jul 31, 1992
Inventors
Nicholas M. Karayannis
Steven A. Cohen
Julie L. Ledermann
Assignee (at issue)
Amoco 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.