Granted Patent
Utility
US 4,290,921 · App. 06/130,655
Attenuated superactive multimetallic catalytic composite
Inventor:
George J. Antos
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Mar 17, 1980
Inventor
George J. Antos
Assignee (at issue)
UOP LLC
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.