Issued Patents All Time
Showing 76–100 of 108 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962074 | Catalytic cracking of hydrocarbons with oxygen promoted alkali metal zeolite cracking catalyst | Nai Y. Chen | 1990-10-09 |
| 4938863 | Metals tolerant catalytic cracking catalyst, method of manufacture and use thereof | Billy K. Huh | 1990-07-03 |
| 4937222 | Catalyst capable of hydrotreating residual petroleum oil | Philip J. Angevine, Michael E. Landis | 1990-06-26 |
| 4935573 | Aromatization process and catalyst utilizing a mixture of shape-selective porous crystalline silicate zeolite and pillared layered metal oxide | Brent A. Aufdembrink, Sharon B. McCullen | 1990-06-19 |
| 4933310 | Aromatization process and catalyst utilizing a mixture of shape-selective porous crystalline silicate zeolite and pillared layered metal oxide | Brent A. Aufdembrink, Sharon B. McCullen | 1990-06-12 |
| 4911823 | Catalytic cracking of paraffinic feedstocks with zeolite beta | Nai Y. Chen, Clinton R. Kennedy, Anil B. Ketkar, Leonard R. Koenig, Robert A. Ware | 1990-03-27 |
| 4910181 | Hydrogen bronze catalyst for demetallizing petroleum resids | Philip J. Angevine, Arthur W. Chester, Garry W. Kirker | 1990-03-20 |
| 4902392 | Hydrocracking process | Brent A. Aufdembrink, Richard F. Socha, Michael R. Stapleton | 1990-02-20 |
| 4895638 | Catalytic cracking process | Brent A. Aufdembrink, Charles T. Kresge | 1990-01-23 |
| 4895636 | FCC process with catalyst separation | Nai Y. Chen, Billy K. Huh | 1990-01-23 |
| 4884531 | Operation of an internal combustion engine with a pre-engine reformer | Ralph M. Dessau | 1989-12-05 |
| 4882039 | Catalytic cracking of hydrocarbons with oxygen promoted alkali metal zeolite cracking catalyst | Nai Y. Chen | 1989-11-21 |
| 4869806 | Production of high viscosity index lubricating oil stock | Roger A. Morrison, Ernest W. Valyocsik | 1989-09-26 |
| 4863885 | Method for increasing the hydrocarbon sorption capacity of a zeolite | — | 1989-09-05 |
| 4861932 | Aromatization process | Nai Y. Chen, Sharon B. McCullen | 1989-08-29 |
| 4853104 | Process for catalytic conversion of lube oil bas stocks | Philip Varghese | 1989-08-01 |
| 4834869 | Resid upgrading process | Philip J. Angevine, Pochen Chu, Garry W. Kirker | 1989-05-30 |
| 4812228 | Process for hydrotreating residual petroleum oil | Philip J. Angevine, Michael E. Landis | 1989-03-14 |
| 4803186 | Shape selective crystalline silicate zeolite containing intermetallic component and use as catalyst in hydrocarbon conversions | Nai Y. Chen, Paul B. Weisz | 1989-02-07 |
| 4781817 | Hydrogen bronze catalyst and improved resid upgrading processes using it | Philip J. Angevine, Arthur W. Chester, Garry W. Kirker | 1988-11-01 |
| 4743572 | Magnesia-alumina-aluminum phosphate catalyst and catalyst product thereof | Philip J. Angevine, Pochen Chu, Garry W. Kirker | 1988-05-10 |
| 4737263 | Process and apparatus for catalytic dewaxing of paraffinic stocks and the simultaneous removal of cracked products | Nai Y. Chen, Bruce P. Pelrine, Richard F. Socha | 1988-04-12 |
| 4711710 | Process for making improved lubricating oils from heavy feedstock | Nai Y. Chen, Susan M. Leiby, Stephen M. Oleck, Bruce P. Pelrine | 1987-12-08 |
| 4683052 | Method for non-oxidative hydrogen reactivation of zeolite dewaxing catalysts | George R. Landolt | 1987-07-28 |
| 4649127 | Process for hydrogenative reactivation of spent catalysts | Nai Y. Chen | 1987-03-10 |