Granted Patent
Utility
US 4,297,239 · App. 06/120,101
Hydroformylation catalyst reactivation
Inventors:
David R. Bryant, Richard A. Galley
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Feb 28, 1980
Inventors
David R. Bryant
Richard A. Galley
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.