Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9556084 | Process for the reduction of alkylation catalyst deactivation utilizing low silica to alumina ratio catalyst | James R. Butler, Xin Xiao | 2017-01-31 |
| 8680354 | Process for the reduction of alkylation catalyst deactivation utilizing low silica to alumina ratio catalyst | James R. Butler, Xin Xiao | 2014-03-25 |
| 8637720 | Processes for the reduction of alkylation catalyst deactivation utilizing stacked catalyst bed | Marcus Ledoux | 2014-01-28 |
| 8552238 | Process for the reduction of alkylation catalyst deactivation | James R. Butler, Xin Xiao | 2013-10-08 |
| 8524969 | Dehydrogenation reactions of hydrocarbons to alkenes | James R. Butler, Olga Khabashesku | 2013-09-03 |
| 8426662 | Processes for reduction of alkylation catalyst deactivation utilizing stacked catalyst bed | Marcus Ledoux | 2013-04-23 |
| 7981377 | Dehydrogenation of alkyl aromatics | Thomas Parenteau, Marcus Ledoux, Mark Gremillion | 2011-07-19 |
| 7696395 | Dehydrogenation and polymerization process | — | 2010-04-13 |
| 7569741 | Petrochemical feedstock purification | James R. Butler | 2009-08-04 |
| 7507385 | Dehydrogenation process | James R. Butler, Adrian M. Jacobsen | 2009-03-24 |
| 7105711 | Process for the selective hydrogenation of phenylacetylene | — | 2006-09-12 |
| 6960279 | Method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith | — | 2005-11-01 |
| 6897346 | Aromatic conversion process employing low surface area zeolite Y | James R. Butler | 2005-05-24 |
| 6864399 | Silica-supported alkylation catalyst | James R. Butler | 2005-03-08 |
| 6781024 | Dehydrogenation process | James R. Butler, Adrian M. Jacobsen | 2004-08-24 |
| 6727398 | Methods and systems for purifying styrene feedstock comprising use of low palladium catalyst | — | 2004-04-27 |
| 6689926 | Process for purifying styrene monomer feedstock prior to polymerization | — | 2004-02-10 |
| 6380449 | Dehydrogenation process | James R. Butler, Adrian M. Jacobsen | 2002-04-30 |
| 6376729 | Multi-phase alkylation process | James R. Butler | 2002-04-23 |
| 6268542 | Multi-phase alkylation-transalkylation process | James R. Butler | 2001-07-31 |
| 6222084 | Gas phase alkylation-liquid phase transalkylation process | Ashim Kumar Ghosh, James R. Butler | 2001-04-24 |
| 6057485 | Gas phase alkylation with split load of catalyst | James R. Butler, Ashim Kumar Ghosh | 2000-05-02 |
| 5955642 | Gas phase alkylation-liquid transalkylation process | James R. Butler | 1999-09-21 |
| 5900518 | Heat integration in alkylation/transalkylation process | Joseph Honn Tudor | 1999-05-04 |
| 5847255 | Gas phase alkylation-liquid phase transalkylation process | Ashim Kumar Ghosh, James R. Butler | 1998-12-08 |