Issued Patents All Time
Showing 25 most recent of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7102051 | Treatment of molecular sieves with silicon containing compounds | Stephen N. Vaughn, John Di-Yi Ou, Jar-Lin Kao | 2006-09-05 |
| 6841510 | Treatment of molecular sieves with silicon containing compounds | Stephen N. Vaughn, John Di-Yi Ou, Jar-Lin Kao | 2005-01-11 |
| 6717023 | Method for converting oxygenates to olefins | James R. Lattner, Stephen N. Vaughn, Keith H. Kuechler, David C. Skouby | 2004-04-06 |
| 6552240 | Method for converting oxygenates to olefins | James R. Lattner, Stephen N. Vaughn, Keith H. Kuechler, David C. Skouby | 2003-04-22 |
| 6482999 | Method for improving light olefin selectivity in an oxygenate conversion reaction | Shun C. Fung, James R. Lattner, Stephen N. Vaughn, Richard B. Hall, Ron G. Searle +1 more | 2002-11-19 |
| 6455747 | Method for converting oxygenates to olefins | James R. Lattner, Stephen N. Vaughn, Keith H. Kuechler, David C. Skouby | 2002-09-24 |
| 6448460 | Maintaining acid catalyst sites in SAPO molecular sieves | Marcel Janssen, Machteld M. Mertens, Cornelius W. M. Van Oorschot, Stephen N. Vaughn, David Lumgair | 2002-09-10 |
| 6225254 | Maintaining acid catalyst sites in sapo molecular sieves | Marcel Janssen, Machteld M. Mertens, Cornelius W. M. Van Oorschot, Stephen N. Vaughn, David Lumgair | 2001-05-01 |
| 6187983 | Converting oxygenates to olefins in the presence of electromagnetic energy | — | 2001-02-13 |
| 6137022 | Process for increasing the selectivity of a reaction to convert oxygenates to olefins | Keith H. Kuechler, William L. Kuechler, Sr. | 2000-10-24 |
| 6057261 | One step conversion of methanol to hydrogen and carbon dioxide | — | 2000-05-02 |
| 6051746 | Oxygenate conversions using modified small pore molecular sieve catalysts | Stephen N. Vaughn, Robert Scott Smith | 2000-04-18 |
| 6046373 | Catalytic conversion of oxygenates to olefins | — | 2000-04-04 |
| 6040264 | Use of alkaline earth metal containing small pore non-zeolitic molecular sieve catalysts in oxygenate conversion | Stephen N. Vaughn | 2000-03-21 |
| 6023005 | Process for converting oxygenates to olefins using molecular sieve catalysts comprising desirable carbonaceous deposits | James R. Lattner, Stephen N. Vaughn, Keith H. Kuechler, David C. Skouby | 2000-02-08 |
| 6005155 | Modification of molecular sieve catalyst for reduced methane production during conversion of oxygenates to olefins | — | 1999-12-21 |
| 6004898 | Alkaline earth metal containing small pore non-zeolitic molecular sieve catalysts | — | 1999-12-21 |
| 5952538 | Use of short contact time in oxygenate conversion | Stephen N. Vaughn, David Lumgair | 1999-09-14 |
| 5932512 | Fluorination of synthesized molecular sieve catalysts for increased selectivity to ethylene during conversion of oxygenates to olefins | — | 1999-08-03 |
| 5925586 | Phosphorus modified small pore molecular sieve catalysts, and their use in the production of light olefins | — | 1999-07-20 |
| 5925800 | Conversion of oxygenates to hydrocarbons with monolith supported non-zeolitic molecular sieve catalysts | Wenyih F. Lai | 1999-07-20 |
| 5904880 | One step conversion of methanol to hydrogen and carbon dioxide | — | 1999-05-18 |
| 5420239 | Method for inhibiting popcorn polymer formation by heat | Cynthia C. Ingram, John Jr. J. McManus | 1995-05-30 |
| 5345030 | Inhibiting popcorn polymer formation with sulfur-containing compounds | John J. Cikut, Roque V. Martir, Jos Wristers | 1994-09-06 |
| 5196619 | Inhibiting popcorn polymer formation with sulfur-containing compounds | John J. Cikut, Roque V. Martir, Jos Wristers | 1993-03-23 |