Carvalho de Holleben; Carlos Roberto
Patent Applications and Registrations
Patent applications and USPTO patent grants for Carvalho de Holleben; Carlos Roberto.The latest application filed is for "process to increase petroleum recovery from petroleum reservoirs".
- Carvalho de Holleben; Carlos Roberto - Rio de Janeiro BR
| Patent | Date |
|---|---|
| Process to increase petroleum recovery from petroleum reservoirs Grant 5,282,508 - Ellingsen , et al. February 1, 1 | 1994-02-01 |
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