Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5358633 | Hydrodesulfurization of cracked naphtha with low levels of olefin saturation | Eugene P. Dai | 1994-10-25 |
| 5354452 | Synthesis of zeolites | Eugene P. Dai, Burton H. Bartley | 1994-10-11 |
| 5342507 | Mild hydrocracking process employing catalysts containing dealuminated y-zeolites | Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin | 1994-08-30 |
| 5340466 | Hydrodesulfurization of cracked naphtha with hydrotalcite-containing catalyst | Pei-Shing E. Dai, Randall H. Petty | 1994-08-23 |
| 5322616 | Mild hydrocracking of heavy hydrocarbon feedstocks employing lithia promoted catalysts | Pei-Shing E. Dai, Charles N. Campbell, II, Joseph A. Durkin | 1994-06-21 |
| 5308472 | Mild hydrocracking process using catalysts containing dealuminated y-zeolites | Pei-Shing E. Dai, Charles N. Campbell, II, Bobby R. Martin | 1994-05-03 |
| 5254513 | Method for the reactivation of spent alumina-supported hydrotreating catalysts | Johnnie R. Hardee, Jr. | 1993-10-19 |
| 5230791 | Process for the reactivation of spent alumina-supported hydrotreating catalysts | — | 1993-07-27 |
| 5209840 | Separation of active catalyst particles from spent catalyst particles by air elutriation | Johnnie R. Hardee, Jr., John A. Lemen | 1993-05-11 |
| 5143878 | Zeolite treating process | Pei-Shing E. Dai | 1992-09-01 |
| 5112473 | Hydrotreating or cracking process employing an acidified dealuminated Y-zeolite | Pei-Shing E. Dai | 1992-05-12 |
| 5094994 | Catalyst composition for hydroprocessing petroleum feedstocks | Burton H. Bartley, Laurence D. Neff, Pei-Shing E. Dai | 1992-03-10 |
| 5087348 | Hydrocarbon treating process | Pei-Shing E. Dai, Bobby R. Martin | 1992-02-11 |
| 5069890 | Zeolite treating process | Pei-Shing E. Dai, Bobby R. Martin | 1991-12-03 |
| 5047142 | Catalyst composition and method for hydroprocessing petroleum feedstocks | Burton H. Bartley, Laurence D. Neff, Pei-Shing E. Dai | 1991-09-10 |
| 4941964 | Hydrotreatment process employing catalyst with specified pore size distribution | Pei-Shing E. Dai, Burton H. Bartley, Randall H. Petty | 1990-07-17 |