Granted Patent
Utility
US 4,347,159 · App. 06/152,900
Activators for Ziegler type polymerization catalysts
Inventors:
Walter Nudenberg, Yong S. Rim, Demetreos N. Matthews
Patented Case
View Patent ↗
Granted: Aug 31, 1982
Filed: May 23, 1980
Inventors
Walter Nudenberg
Yong S. Rim
Demetreos N. Matthews
Assignee (at issue)
Uniroyal Ltd.
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.