Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324648 | Cracking catalyst poisons passivated with tin compounds plus both sulfur and phosphorus | John S. Roberts, Brent J. Bertus, H. Wayne Mark | 1982-04-13 |
| 4321129 | Cracking process employing catalyst having combination of antimony and tin | Brent J. Bertus | 1982-03-23 |
| 4310410 | Cracking process | — | 1982-01-12 |
| 4290919 | Cracking catalysts passivated by tungsten | Brent J. Bertus, Harold W. Mark | 1981-09-22 |
| 4283274 | Process for cracking hydrocarbons with a cracking catalyst passivated with thallium | Brent J. Bertus | 1981-08-11 |
| 4279735 | Passivation of metals contaminating a used cracking catalyst with certain antimony carbonates and their thio analogues | Brent J. Bertus, H. Wayne Mark | 1981-07-21 |
| 4268188 | Process for reducing possibility of leaching of heavy metals from used petroleum cracking catalyst in land fills | Brent J. Bertus, John S. Roberts | 1981-05-19 |
| 4264433 | Passivating metals on cracking catalysts by indium antimonide | — | 1981-04-28 |
| 4264434 | Passivation of metals which contaminate cracking catalysts with antimony tris (hydrocarbyl sulfonate) | Brent J. Bertus, Harold W. Mark | 1981-04-28 |
| 4263131 | Passivation of metals contaminating a cracking catalyst with an antimony tris(dihydrocarbyl phosphite) catalyst and process of cracking therewith | Brent J. Bertus, Harold W. Mark | 1981-04-21 |
| 4263130 | Process for cracking hydrocarbons with a catalyst passivated with an antimony tris (hydrocarbyl sulfide) | Brent J. Bertus, Harold W. Mark | 1981-04-21 |
| 4263172 | Cracking catalysts | — | 1981-04-21 |
| 4257876 | Passivation of metals contaminating a cracking catalyst with trihydrocarbylantimony oxide and process for converting hydrocarbons | — | 1981-03-24 |
| 4257919 | Method of transferring a passivating agent to or from a cracking catalyst | John S. Roberts, Brent J. Bertus, H. Wayne Mark | 1981-03-24 |
| 4256564 | Cracking process and catalyst for same containing indium to passivate contaminating metals | John S. Roberts, Brent J. Bertus | 1981-03-17 |
| 4255287 | Cracking catalyst | Brent J. Bertus | 1981-03-10 |
| 4238367 | Passivation of metals on cracking catalyst with thallium | Brent J. Bertus | 1980-12-09 |
| 4238362 | Passivation of metals contaminating a used cracking catalyst with certain antimony carbonates and their thio analogues | Brent J. Bertus, H. Wayne Mark | 1980-12-09 |
| 4218337 | Passivating metals on cracking catalysts with tellurium | — | 1980-08-19 |
| 4216120 | Antimony containing fines plus cracking catalyst composition | Richard H. Nielsen, Glenn H. Dale | 1980-08-05 |
| 4209453 | Antimony tris(dihydrocarbyl phosphite) and preparation thereof | Brent J. Bertus, Harold W. Mark | 1980-06-24 |
| 4208302 | Passivating metals on cracking catalysts | — | 1980-06-17 |
| 4207204 | Passivation of metals on cracking catalyst with a crude antimony tris(O,O-dihydrocarbyl phosphorodithioate) | Brent J. Bertus | 1980-06-10 |
| 4198317 | Passivation of metals which contaminate cracking catalysts with antimony tris (hydrocarbyl sulfonate) | Brent J. Bertus, Harold W. Mark | 1980-04-15 |
| 4193891 | Passivation of metals on cracking catalyst with an antimony thiocarbamate | — | 1980-03-18 |