Granted Patent
Utility
US 4,283,568 · App. 06/108,736
Process for the recovery of phenol from a reaction mixture resulting from the acid cleavage of cumene hydroperoxide
Inventor:
Peter R. Pujado
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Dec 31, 1979
Inventor
Peter R. Pujado
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.