Granted Patent
Utility
US 4,218,574 · App. 06/056,762
Hydrofluoric acid alkylation utilizing a unitary settler-soaker vessel
Inventor:
Robert F. Anderson
Patented Case
View Patent ↗
Granted: Aug 19, 1980
Filed: Jul 12, 1979
Inventor
Robert F. Anderson
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.