Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34250 | Process for regenerating sulfur contaminated reforming catalysts | Donald Henry Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson | 1993-05-11 |
| 4851380 | Process for regenerating sulfur contaminated reforming catalysts | Donald Henry Mohr, Paul W. Tamm, Robert L. Jacobson, Thomas R. Hughes, Charles R. Wilson | 1989-07-25 |
| 4515757 | Stripping a solution containing molybdenum, tungsten and/or vanadium values | Gale L. Hubred | 1985-05-07 |
| 4514369 | Recovery of cobalt, molybdenum, nickel, tungsten and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum, tungsten and vanadium and sequential extraction of nickel and cobalt | Gale L. Hubred | 1985-04-30 |
| 4500495 | Recovering metals from spent hydroprocessing catalysts | Gale L. Hubred | 1985-02-19 |
| 4442074 | Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by serial extraction of nickel and cobalt and coextracting molybdenum and vanadium | Gale L. Hubred | 1984-04-10 |
| 4434140 | Stripping a solution containing molybdenum and vanadium values | Gale L. Hubred | 1984-02-28 |
| 4434141 | Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum and vanadium and sequential extraction of nickel and cobalt | Gale L. Hubred | 1984-02-28 |
| 4432949 | Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by precipitating vanadium and subsequent serial ion exchange | Gale L. Hubred | 1984-02-21 |
| 4432953 | Leaching cobalt from spent hydroprocessing catalysts with sulfur dioxide | Gale L. Hubred | 1984-02-21 |
| 4409190 | Extracting cobalt from spent hydroprocessing catalysts with cyanide | — | 1983-10-11 |