Granted Patent
Utility
US 4,217,461 · App. 06/060,714
Olefinic hydrocarbon isomerization process
Inventor:
Dennis J. Ward
Patented Case
View Patent ↗
Granted: Aug 12, 1980
Filed: Jul 26, 1979
Inventor
Dennis J. Ward
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.