Granted Patent
Utility
US 4,400,548 · App. 06/293,190
Hydroformylation process using bisphosphine monooxide ligands
Inventors:
Anthony G. Abatjoglou, Ernst Billig
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Aug 17, 1981
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.