Granted Patent
Utility
US 5,466,874 · App. 08/110,999
Polymeric carbonylation catalyst system
Inventors:
Mark O. Scates, R. Jay Warner, G. Paull Torrence
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Aug 24, 1993
Inventors
Mark O. Scates
R. Jay Warner
G. Paull Torrence
Assignee (at issue)
Hoechst Celanese 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.