Granted Patent
Utility
US 5,041,408 · App. 07/519,690
Catalyst comprising calcium aluminate cement and at least one oxide of nickel or cobalt
Inventors:
Frank King, Martin E. Fakley
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: May 7, 1990
Inventors
Frank King
Martin E. Fakley
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.