Granted Patent
Utility
US 4,542,198 · App. 06/554,705
Polymerization catalysts
Inventors:
Adolfo Mayr, Umberto Giannini, Ermanno Susa, Paolo Longi, Ettore Giachetti, Domenico F. Deluca
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Nov 23, 1983
Inventors
Adolfo Mayr
Umberto Giannini
Ermanno Susa
Paolo Longi
Ettore Giachetti
Domenico F. Deluca
Assignee (at issue)
Montedison S.p.A.
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.