Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474413 | Process for the reduction of the relative permeability to water in oil-bearing formations | Luiz Cesar Ferreira Barbosa, Sérgio Luiz Pereira De Freitas Coelho, Carlos Roberto Carvalho De Holleben | 2002-11-05 |