Granted Patent
Utility
US 4,487,973 · App. 06/491,687
Hydroformylation process with platinum (O) catalyst
Inventors:
Chao-Yang Hsu, Paul E. Ellis, Jr.
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: May 5, 1983
Inventors
Chao-Yang Hsu
Paul E. Ellis, Jr.
Assignee (at issue)
SUN-TECH LIMITED
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.