Carlos Roberto Carvalho de Holleben

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Rio de Janeiro, BR

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Patents Grantslast 30 patents

Information Patent Grant
Process to increase petroleum recovery from petroleum reservoirs
- Patent number 5,282,508
- Issue date Feb 1, 1994
- Petroleo Brasilero S.A. - PETROBRAS
- Olav Ellingsen
- E21 - EARTH DRILLING MINING