Granted Patent
Utility
US 4,249,020 · App. 05/826,117
Oxydehydrogenation of certain.gtoreq.C4 saturated oxyhydrocarbon compounds
Inventors:
Daniel W. McNeil, Benjamin A. Phillips
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Aug 19, 1977
Inventors
Daniel W. McNeil
Benjamin A. Phillips
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.