Granted Patent
Utility
US 4,522,933 · App. 06/476,314
Hydroformylation catalyst containing bisphosphine monooxide ligands
Inventors:
Anthony G. Abatjoglou, Ernst Billig
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Mar 17, 1983
Inventors
Anthony G. Abatjoglou
Ernst Billig
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.