Issued Patents All Time
Showing 25 most recent of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7452846 | Desulfurization with octane enhancement | Edward Sughure, Bobby Cockrell, Glenn W. Dodwell | 2008-11-18 |
| 7232516 | Desulfurization with octane enhancement | Edward Sughure, Bobby Cockrell, Glenn W. Dodwell | 2007-06-19 |
| RE37842 | Regenerating zeolitic cracking catalyst | Harold W. Mark, John S. Roberts, Arnold M. Schaffer | 2002-09-17 |
| RE37789 | Regenerating zeolitic cracking catalyst | Harold W. Mark, John S. Roberts, Arnold M. Schaffer | 2002-07-16 |
| 6254766 | Desulfurization and novel sorbents for same | Edward L. Sughrue, II, Gyanesh P. Khare, Marvin M. Johnson | 2001-07-03 |
| 6110357 | Passivated catalysts for cracking process | Dwayne R. Senn, Lyle R. Kallenbach | 2000-08-29 |
| 5358630 | Regenerating zeolitic cracking catalyst | Harold W. Mark, John S. Roberts, Arnold M. Schaffer | 1994-10-25 |
| 5024750 | Process for converting heavy hydrocarbon oil | Edward L. Sughrue, II, Patricia A. Tooley, Bille S. Grayson | 1991-06-18 |
| 5021377 | Demetallization and passivation of spent cracking catalysts | Michael K. Maholland, Chia-Min Fu, Richard E. Lowery, Donald H. Kubicek | 1991-06-04 |
| 4793914 | Passivation of metal contaminated cracking catalysts | Darrell W. Walker | 1988-12-27 |
| 4775461 | Cracking process employing catalysts comprising pillared clays | Jesse R. Harris, David R. Battiste | 1988-10-04 |
| 4742033 | Cracking catalysts comprising pillared clays | Jesse R. Harris, David R. Battiste | 1988-05-03 |
| 4728629 | Cracking catalyst restoration with aluminum compounds | H. Wayne Mark, Dwight L. McKay | 1988-03-01 |
| 4727053 | Passivation of metal contaminated cracking catalysts | Darrell W. Walker | 1988-02-23 |
| 4719191 | Pillared interlayered clay products of increased stability | David R. Battiste, Jesse R. Harris, George D. Parks | 1988-01-12 |
| 4705768 | Coprecipitate of metal phosphates | Daniel Coombs, Ted H. Cymbaluk, Simon G. Kukes | 1987-11-10 |
| 4680105 | Hydrodemetallization of oils with catalysts comprising nickel phosphate and titanium phosphate | Daniel Coombs, Ted H. Cymbaluk, Simon G. Kukes | 1987-07-14 |
| 4671866 | Hydrodemetallization of oils | Daniel Coombs, Gerhard P. Nowack, Simon G. Kukes | 1987-06-09 |
| 4670134 | Catalytic hydrofining of oil | John H. Kolts, Daniel Coombs | 1987-06-02 |
| 4664779 | Cracking catalyst restoration with aluminum compounds | Dwight L. McKay, H. Wayne Mark | 1987-05-12 |
| 4632748 | Cracking process | Chia-Min Fu | 1986-12-30 |
| 4584283 | Cracking catalyst restoration with aluminum compounds | H. Wayne Mark, Dwight L. McKay | 1986-04-22 |
| 4562167 | Liquid treating agent for cracking catalyst | Dwight L. McKay | 1985-12-31 |
| 4535066 | Passivating metals on cracking catalysts | Harold W. Mark, John S. Roberts, Dwight L. McKay, Lyle E. Fenska | 1985-08-13 |
| 4490299 | Germanium dithiophosphate | Dwight L. McKay | 1984-12-25 |