Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5282508 | Process to increase petroleum recovery from petroleum reservoirs | Olav Ellingsen, Carlos Roberto Carvalho de Holleben, Carlos Alberto de Castro Goncalves, Paulo Jose Villani de Andrade, Roberto F. Mezzomo | 1994-02-01 |
| 4643254 | Process for the correction of oil well productivity and/or injectivity profiles | Luiz Cesar Ferreira Barbosa, Adelman M. Ribeiro, Celso C. M. Branco | 1987-02-17 |