Granted Patent
Utility
US 5,177,049 · App. 07/746,903
Oxidation of tertiary-alkyl substituted aromatics
Inventors:
Roy A. Periana, George F. Schaefer
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Aug 19, 1991
Inventors
Roy A. Periana
George F. Schaefer
Assignee (at issue)
Monsanto Company
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.