Granted Patent
Utility
US 4,657,889 · App. 06/747,440
Nickel/alumina catalyst and process for its preparation
Inventors:
Keshab L. Ganguli, Peter Nootenboom, Cornelis M. Lox
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Jun 21, 1985
Inventors
Keshab L. Ganguli
Peter Nootenboom
Cornelis M. Lox
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.