Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4711710 | Process for making improved lubricating oils from heavy feedstock | Nai Y. Chen, Thomas F. Degnan, Susan M. Leiby, Stephen M. Oleck | 1987-12-08 |
| 4668377 | Catalytic process for dewaxing | Nai Y. Chen | 1987-05-26 |
| 4588560 | Hydroprocessing reactor for catalytically dewaxing liquid petroleum feedstocks | Thomas F. Degnan | 1986-05-13 |
| 4568524 | Hydroprocessing reactor for catalytically dewaxing liquid petroleum feedstocks | — | 1986-02-04 |
| 4560670 | Method for regeneration of catalysts by removal of nitrogen poisons | — | 1985-12-24 |
| 4490566 | Production of phenol | Clarence D. Chang | 1984-12-25 |
| 4490565 | Production of phenol | Clarence D. Chang | 1984-12-25 |
| 4395327 | Hydrotreating process | — | 1983-07-26 |
| 4388177 | Preparation of natural ferrierite hydrocracking catalyst and hydrocarbon conversion with catalyst | Emmerson Bowes | 1983-06-14 |
| 4363717 | Conversion of heavy hydrocarbon oils | Nai Y. Chen, Tsoung Y. Yan | 1982-12-14 |
| 4335019 | Preparation of natural ferrierite hydrocracking catalyst and hydrocarbon conversion with catalyst | Emmerson Bowes | 1982-06-15 |
| 4299594 | Process for utilizing waste lubricating oils | Dennis E. Walsh | 1981-11-10 |
| 4278564 | Method for modifying the shape selectivity of ferrierite | — | 1981-07-14 |
| 4259306 | Synthesis of ZSM-39 | — | 1981-03-31 |
| 4222855 | Production of high viscosity index lubricating oil stock | Nai Y. Chen | 1980-09-16 |