Granted Patent
Utility
US 4,337,156 · App. 06/189,873
Adsorptive separation of contaminants from naphtha
Inventor:
Armand J. deRosset
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Sep 23, 1980
Inventor
Armand J. deRosset
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.