Granted Patent
Utility
US 4,358,365 · App. 06/257,042
Conversion of asphaltene-containing charge stocks
Inventors:
Leroi E. Hutchings, Algie J. Conner
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Apr 24, 1981
Inventors
Leroi E. Hutchings
Algie J. Conner
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.