Granted Patent
Utility
US 6,323,364 · App. 09/386,561
Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile
Inventors:
Pramod Agrawal, Hung-Cheun Cheung, Darrell A. Fisher, Valerie Santillan, Mark O. Scates, Elaine C. Sibrel, G. Torrence
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Aug 31, 1999
Inventors
Pramod Agrawal
Hung-Cheun Cheung
Darrell A. Fisher
Valerie Santillan
Mark O. Scates
Elaine C. Sibrel
G. Torrence
Assignee (at issue)
Celanese International 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.