Granted Patent
Utility
US 4,665,273 · App. 06/829,338
Isomerization of high sulfur content naphthas
Inventors:
James A. Johnson, Robert J. Schmidt
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Feb 14, 1986
Inventors
James A. Johnson
Robert J. Schmidt
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.