Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627770 | Method and apparatus for sequesting entrained and volatile catalyst species in a carbonylation process | Hung-Cheun Cheung, Valerie Santillan, Mark O. Scates, G. Paull Torrence | 2003-09-30 |
| 6458995 | Catalytic composition for carbonylation including iridium and pyridine polymers | Hung-Cheun Cheung, G. Torrence | 2002-10-01 |
| 6323364 | Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile | Pramod Agrawal, Hung-Cheun Cheung, Darrell A. Fisher, Valerie Santillan, Mark O. Scates +1 more | 2001-11-27 |
| 6211405 | Addition of iridium to the rhodium/inorganic iodide catalyst system | Hung-Cheun Cheung, Robin Suzanne Tanke, G. Paull Torrence | 2001-04-03 |