Granted Patent
Utility
US 4,987,111 · App. 07/403,681
Catalyst component and catalyst for the polymerization of ethylene and the copolymerization of ethylene with alpha-olefins
Inventors:
Fausto Calderazzo, Guido Pampaloni, Francesco Masi, Angelo Moalli, Renzo Invernizzi
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Sep 6, 1989
Inventors
Fausto Calderazzo
Guido Pampaloni
Francesco Masi
Angelo Moalli
Renzo Invernizzi
Assignee (at issue)
Enichem Anic 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.