Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857494 | Mild hydrocracking catalyst for the production of middle distillates | Nelson P. Martinez, Roberto Galiasso, Jose R. Velasquez, Carlos Zerpa | 1989-08-15 |
| 4816135 | Cracking heavy hydrocarbon feedstocks with a catalyst comprising an anatase vanadium passivating agent | Nelson P. Martinez, Jose R. Velasquez | 1989-03-28 |