Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6160026 | Process for optimizing hydrocarbon synthesis | Pei-Sing Dai, deceased, Jeffrey Baker Harrison, Lalit S. Shah, Kamlesh B. Vakil | 2000-12-12 |
| 5545602 | Catalyst with specified pore size distribution | Gerald V. Nelson, Roy E. Pratt, David E. Sherwood, Jr., Pei-Shing E. Dai | 1996-08-13 |
| 5494570 | Ebullated bed process | Gerald V. Nelson, David E. Self, Glenn A. Clausen | 1996-02-27 |
| 5468371 | Catalyst for residual conversion demonstrating reduced toluene insolubles | Gerald V. Nelson, Roy E. Pratt | 1995-11-21 |
| 5435908 | Hydroconversion process employing catalyst with specified pore size distribution | Gerald V. Nelson, Roy E. Pratt, David E. Sherwood, Jr., Pei-Shing E. Dai | 1995-07-25 |
| 5416054 | Hydroconversion catalyst with specified pore size distribution | Pei-Shing E. Dai, Gerald V. Nelson, Roy E. Pratt, David E. Sherwood, Jr. | 1995-05-16 |
| 5399259 | Hydroconversion process employing catalyst with specified pore size distribution | Pei-Shing E. Dai, Gerald V. Nelson, Roy E. Pratt, David E. Sherwood, Jr. | 1995-03-21 |
| 5215653 | Catalyst inventory control in an ebullated bed process | Gerald V. Nelson | 1993-06-01 |
| 5156733 | Method for controlling sedimentation in an ebulated bed process | Gerald V. Nelson, Stanley M. Farabee | 1992-10-20 |
| 5108580 | Two catalyst stage hydrocarbon cracking process | Gerald V. Nelson, Roy E. Pratt, Charles H. Schrader, William B. Livingston, Michael P. Bellinger +1 more | 1992-04-28 |
| 4576710 | Catalyst desulfurization of petroleum residua feedstocks | Michael C. Chervenak | 1986-03-18 |
| 4521295 | Sustained high hydroconversion of petroleum residua feedstocks | Michael C. Chervenak, Richard M. Eccles | 1985-06-04 |
| 4443330 | Catalyst activity in coal liquid upgrading | — | 1984-04-17 |
| 4427535 | Selective operating conditions for high conversion of special petroleum feedstocks | Susan M. Brandt, Michael C. Chervenak | 1984-01-24 |
| 4217206 | Extending life of demetallization catalyst | — | 1980-08-12 |