Issued Patents 1989
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885080 | Process for demetallizing and desulfurizing heavy crude oil | Ronald E. Brown, Robert J. Hogan, Daniel Coombs | 1989-12-05 |
| 4879425 | Oligomerization of olefins | Robert L. Banks, Jesse R. Harris | 1989-11-07 |
| 4875991 | Two-catalyst hydrocracking process | Jeffrey T. Miller, Louis C. Gutberlet | 1989-10-24 |
| 4870044 | Treated alumina material for fixed hydrofining beds | Jesse R. Harris | 1989-09-26 |
| 4834865 | Hydrocracking process using disparate catalyst particle sizes | Jeffrey T. Miller, L. Charles Gutberlet, Jeffrey C. Kelterborn | 1989-05-30 |
| 4831004 | Impregnated alumina-containing material | Karlheinz K. Brandes, Thomas Davis | 1989-05-16 |
| 4828683 | Hydrofining employing a support material for fixed beds | Lloyd E. Gardner | 1989-05-09 |
| 4824556 | Hydrogenation process of unsaturated hydrocarbons employing impregnated alumina containing material | Karlheinz K. Brandes, Thomas Davis | 1989-04-25 |
| 4820676 | Treated alumina material for fixed hydrofining beds and process for its preparation | Karlheinz K. Brandes | 1989-04-11 |
| 4814315 | Pretreated alumina containing material and process for its preparation | Thomas Davis, Karlheinz K. Brandes | 1989-03-21 |
| 4808394 | Catalytic oxidation of carbon monoxide | John H. Kolts | 1989-02-28 |
| 4802920 | Extraction of metals from aqueous solutions with asphaltenes | Clifford E. Smith | 1989-02-07 |
| 4802974 | Hydrofining employing treated alumina material in fixed beds | Jesse R. Harris | 1989-02-07 |
| 4802972 | Hydrofining of oils | Jerald A. Howell | 1989-02-07 |
| 4797196 | Hydrocracking process using special juxtaposition of catalyst zones | L. Charles Gutberlet, Albert L. Hensley, Jr. | 1989-01-10 |
| 4797195 | Three zone hydrocracking process | L. Charles Gutberlet, Jeffrey T. Miller | 1989-01-10 |