Granted Patent
Utility
US 4,476,289 · App. 06/269,604
Catalysts for the polymerization of olefins
Inventors:
Adolfo Mayr, Ermanno Susa, Ettore Giachetti
Patented Case
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Granted: Oct 9, 1984
Filed: Jun 2, 1981
Inventors
Adolfo Mayr
Ermanno Susa
Ettore Giachetti
Assignee (at issue)
Montecatini Edison 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.