Granted Patent
Utility
US 4,727,199 · App. 06/753,543
Heterogeneous alkoxylation using anion-bound metal oxides
Inventor:
Stephen W. King
Patented Case
View Patent ↗
Granted: Feb 23, 1988
Filed: Jul 10, 1985
Inventor
Stephen W. King
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.