Granted Patent
Utility
US 4,277,634 · App. 06/138,688
Process for the selective homologation of methanol to ethanol
Inventor:
Wellington E. Walker
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Apr 9, 1980
Inventor
Wellington E. Walker
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.