Granted Patent
Utility
US 4,591,579 · App. 06/678,798
Process for preparing a transition metal-silicate catalyst
Inventors:
Cornelis Martinus Lok, Keshab L. Ganguli
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Dec 5, 1984
Inventors
Cornelis Martinus Lok
Keshab L. Ganguli
Assignee (at issue)
Internationale Otrool Maatschappij Octropa B.V.
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.