Granted Patent
Utility
US 5,972,201 · App. 08/804,856
Hydrocarbon conversion catalyst additives and processes
Inventors:
Terry L. Goolsby, Maurice M. Mitchell
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Feb 24, 1997
Inventors
Terry L. Goolsby
Maurice M. Mitchell
Assignee (at issue)
Marathon Ashland Petroleum 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.