Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892644 | Upgrading solvent extracts by double decantation and use of pseudo extract as hydrogen donor | Byung C. Choi, Grant G. Karsner, Chang-Kuei Lee, Madhava Malladi | 1990-01-09 |
| 4421633 | Low pressure cyclic hydrocracking process using multi-catalyst bed reactor for heavy liquids | Stuart S. Shih | 1983-12-20 |
| 4298458 | Low pressure hydrotreating of residual fractions | Frederick Banta, Alan W. Peters | 1981-11-03 |
| 4271042 | Process for demetalation and desulfurization of petroleum oils | Stephen M. Oleck, Howard S. Sherry, Ronald H. Fischer | 1981-06-02 |