Granted Patent
Utility
US 4,508,842 · App. 06/480,297
Ethylene polymerization using supported vanadium catalyst
Inventors:
Debra L. Beran, Kevin J. Cann, Robert J. Jorgensen, Frederick J. Karol, Norma J. Maraschin, Arthur E. Marcinkowsky
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Mar 29, 1983
Inventors
Debra L. Beran
Kevin J. Cann
Robert J. Jorgensen
Frederick J. Karol
Norma J. Maraschin
Arthur E. Marcinkowsky
Assignee (at issue)
Union Carbide 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.