Issued Patents All Time
Showing 1–25 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5338878 | Alkyl carbonate extraction process | Michael Pacheco, Franklin D. Darrington | 1994-08-16 |
| 5275990 | Process for regenerating a spent resid hydroprocessing catalyst using a group IIA metal | Frederick T. Clark | 1994-01-04 |
| 5221656 | Hydroprocessing catalyst | Frederick T. Clark, Simon G. Kukes, David C. Arters | 1993-06-22 |
| 5154819 | Hydroprocessing using regenerated spent heavy hydrocarbon catalyst | Frederick T. Clark | 1992-10-13 |
| 5100855 | Mixed catalyst system for hyproconversion system | Frederick T. Clark, David Lyzinski | 1992-03-31 |
| 5087596 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst | Frederick T. Clark | 1992-02-11 |
| 5071538 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst | Frederick T. Clark | 1991-12-10 |
| 5059303 | Oil stabilization | James L. Taylor, John M. Forgac, David F. Tatterson | 1991-10-22 |
| 5009771 | Hydroconversion process using mixed catalyst system | Frederick T. Clark, David Lyzinski, Lawrence B. Peck | 1991-04-23 |
| 5009770 | Simultaneous upgrading and dedusting of liquid hydrocarbon feedstocks | Jeffrey T. Miller | 1991-04-23 |
| 4997799 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst | Frederick T. Clark | 1991-03-05 |
| 4994423 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst | Frederick T. Clark | 1991-02-19 |
| 4981576 | Process for the hydrodenitrogenation and hydrocracking of high nitrogen feeds | A. Martin Tait, Thomas D. Nevitt | 1991-01-01 |
| 4980328 | Hydrocracking catalyst | Simon G. Kukes, Christopher L. Marshall, P. Donald Hopkins | 1990-12-25 |
| 4959140 | Two-catalyst hydrocracking process | Simon G. Kukes, Louis C. Gutberlet | 1990-09-25 |
| 4954241 | Two stage hydrocarbon conversion process | Simon G. Kukes, Jeffrey C. Kelterborn, James L. Aderhold, Jr. | 1990-09-04 |
| 4950383 | Process for upgrading shale oil | Andrew Tait | 1990-08-21 |
| 4940530 | Two-stage hydrocarbon conversion process | Simon G. Kukes, Jeffrey C. Kelterborn, James L. Aderhold, Jr. | 1990-07-10 |
| 4925546 | Hydrocracking process | Simon G. Kukes, Christopher L. Marshall, P. Donald Hopkins | 1990-05-15 |
| 4797196 | Hydrocracking process using special juxtaposition of catalyst zones | Simon G. Kukes, L. Charles Gutberlet | 1989-01-10 |
| 4771027 | Catalyst for the hydrotreating of nitrogen-containing feeds | A. Martin Tait, Thomas D. Nevitt | 1988-09-13 |
| 4746419 | Process for the hydrodemetallation hydrodesulfuration and hydrocracking of a hydrocarbon feedstock | Lawrence B. Peck, George L. Ott | 1988-05-24 |
| 4738768 | Process for the hydrodenitrogenation and hydrocracking of high-nitrogen feeds with borosilicates | A. Martin Tait, Thomas D. Nevitt | 1988-04-19 |
| 4707466 | Catalyst for demetallation and desulfurization of heavy hydrocarbons | William I. Beaton, April J. Evans | 1987-11-17 |
| 4657665 | Process for demetallation and desulfurization of heavy hydrocarbons | William I. Beaton, April J. Evans | 1987-04-14 |