Granted Patent
Utility
US 4,019,979 · App. 05/668,545
Fractionation of hydrocarbons
Inventor:
John P. Nolley, Jr.
Patented Case
View Patent ↗
Granted: Apr 26, 1977
Filed: Mar 19, 1976
Inventor
John P. Nolley, Jr.
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.