Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839326 | Promoted molybdenum and tungsten sulfide catalysts, their preparation and use | Thomas R. Halbert, Edward I. Stiefel, Russell R. Chianelli | 1989-06-13 |
| 4831002 | Cr-promoted hydrotreating catalysts | Larry E. McCandlish, Archie R. Young, Edward J. Osterhuber | 1989-05-16 |
| 4824820 | Hydrotreating catalysts comprising a mixture of a sulfide of a promoter metal, amorphous sulfide of trivalent chromium and microcrystalline molybdenum or tungsten sulfide | Allan J. Jacobson, Russell R. Chianelli, John J. Steger, Angelo A. Montagna | 1989-04-25 |
| 4820677 | Amorphous, iron promoted Mo and W sulfide hydroprocessing catalysts and process for their preparation | Allan J. Jacobson, Russell R. Chianelli, Theresa A. Pecoraro | 1989-04-11 |
| 4812227 | Hydrotreating with catalysts comprising mixtures of an amorphous sulfide or trivalent chromium and microcrystallites of molybdenum sulfide or tungsten sulfide | Allan J. Jacobson, Russell R. Chianelli, John J. Steger, Angelo A. Montagna | 1989-03-14 |
| 4801570 | Process for preparing a supported, promoted molybdenum and/or tungsten sulfide hydroprocessing catalyst | Archie R. Young, Allan J. Jacobson, Russell R. Chianelli | 1989-01-31 |