Granted Patent
Utility
US 4,069,269 · App. 05/737,353
Isomerization of naphthenes
Inventors:
Ernest L. Pollitzer, John C. Hayes
Patented Case
View Patent ↗
Granted: Jan 17, 1978
Filed: Nov 1, 1976
Inventors
Ernest L. Pollitzer
John C. Hayes
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.