Granted Patent
Utility
US 4,484,013 · App. 06/567,205
Process for coproduction of isopropanol and tertiary butyl alcohol
Inventor:
Robert J. Schmidt
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Dec 30, 1983
Inventor
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.