Granted Patent
Utility
US 4,490,480 · App. 06/486,513
Nickel catalyst on alumina support
Inventors:
Cornelis Martinus Lok, Dirk Verzijl, Jacob van Dijk
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Apr 19, 1983
Inventors
Cornelis Martinus Lok
Dirk Verzijl
Jacob van Dijk
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.