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, Jose R. Velasquez, Juan Lujano, Carlos Zerpa | 1989-08-15 |
| 4801432 | Apparatus for withdrawing particulate solid from a high pressure vessel | Jose I. Belandria, Pasquale L. Caprioli | 1989-01-31 |