Granted Patent
Utility
US 4,192,952 · App. 05/958,694
Cumene oxidation using 'onium catalysts
Inventor:
Kenneth C. Stueben
Patented Case
View Patent ↗
Granted: Mar 11, 1980
Filed: Nov 8, 1978
Inventor
Kenneth C. Stueben
Assignee (at issue)
Union Carbide Corporation
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.