Issued Patents All Time
Showing 25 most recent of 112 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5494870 | Distillate hydrogenation catalyst | Frederick T. Clark, P. Donald Hopkins | 1996-02-27 |
| 5489375 | Resid hydroprocessing method | Joseph T. Joseph, Thomas J. Karol | 1996-02-06 |
| 5446002 | Resid hydroprocessing catalyst | Thomas J. Karol, Joseph T. Joseph | 1995-08-29 |
| 5348928 | Selective hydrotreating catalyst | P. Donald Hopkins, Riitta L. A. Olleandorff, Pablo D. Hendler, Cynthia D. Ontiveros, Don M. Washecheck | 1994-09-20 |
| 5346612 | Distillate hydrogenation utilizing a catalyst comprising platinum, palladium, and a beta zeolite support | Frederick T. Clark, P. Donald Hopkins | 1994-09-13 |
| 5346874 | Distillate hydrogenation | Frederick T. Clark, P. Donald Hopkins | 1994-09-13 |
| 5322829 | Resid hydrotreating catalyst and process | David C. Artes | 1994-06-21 |
| 5308814 | Distillate hydrogenation catalyst | Frederick T. Clark, P. Donald Hopkins | 1994-05-03 |
| 5276114 | Olefin polymerization catalyst and polymerization process | Gil Hawley, Max P. McDaniel | 1994-01-04 |
| 5271828 | Distillate hydrogenation | Frederick T. Clark, P. Donald Hopkins | 1993-12-21 |
| 5266188 | Selective hydrotreating | P. Donald Hopkins, Riitta L. A. Ollendorff, Pablo D. Hendler, Cynthia D. Ontiveros, Don M. Washecheck | 1993-11-30 |
| 5246570 | Coal liquefaction process using soluble molybdenum-containing organophosphorodithioate catalyst | Donald C. Cronauer, April J. Swanson, Joseph T. Joseph, Arunabha Basu | 1993-09-21 |
| 5231065 | Olefin polymerization catalyst and polymerization process | Gil Hawley, Max P. McDaniel | 1993-07-27 |
| 5225383 | Distillate hydrogenation catalyst | Frederick T. Clark, P. Donald Hopkins, Lisa M. Green | 1993-07-06 |
| 5221656 | Hydroprocessing catalyst | Frederick T. Clark, Albert L. Hensley, Jr., David C. Arters | 1993-06-22 |
| 5151172 | Distillate hydrogenation | Frederick T. Clark, P. Donald Hopkins, Lisa M. Green | 1992-09-29 |
| 5147526 | Distillate hydrogenation | Frederick T. Clark, P. Donald Hopkins | 1992-09-15 |
| 5091490 | Olefin polymerization catalysts and methods | Gil R. Hawley, Robert L. Banks | 1992-02-25 |
| 5055174 | Hydrovisbreaking process for hydrocarbon containing feed streams | Jerald A. Howell, Donald C. Tabler, Thomas Davis | 1991-10-08 |
| 4980328 | Hydrocracking catalyst | Christopher L. Marshall, P. Donald Hopkins, Albert L. Hensley, Jr. | 1990-12-25 |
| 4971680 | Hydrocracking process | Victor K. Shum, P. Donald Hopkins, L. Charles Gutberlet | 1990-11-20 |
| 4959140 | Two-catalyst hydrocracking process | Louis C. Gutberlet, Albert L. Hensley, Jr. | 1990-09-25 |
| 4954241 | Two stage hydrocarbon conversion process | Albert L. Hensley, Jr., Jeffrey C. Kelterborn, James L. Aderhold, Jr. | 1990-09-04 |
| 4948768 | Catalyst composition for oligomerization of olefins | Jesse R. Harris, Robert L. Barks | 1990-08-14 |
| 4940530 | Two-stage hydrocarbon conversion process | Albert L. Hensley, Jr., Jeffrey C. Kelterborn, James L. Aderhold, Jr. | 1990-07-10 |