Granted Patent
Utility
US 4,285,803 · App. 06/115,305
Catalytic slurry process for black oil conversion
Inventors:
Richard Braun, Russell W. Johnson, John G. Gatsis
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Jan 24, 1980
Inventors
Richard Braun
Russell W. Johnson
John G. Gatsis
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.