Granted Patent
Utility
US 4,396,790 · App. 06/333,081
Light olefinic hydrocarbon isomerization process
Inventor:
Dennis J. Ward
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Dec 21, 1981
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.