Wagner C. Coelho

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Rio de Janeiro, BR

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Patents Grantslast 30 patents

Information Patent Grant
Process for the partial solubilization of phosphate rock and obtain...
- Patent number 4,523,941
- Issue date Jun 18, 1985
- Petroleo Brasileiro S.A.-Petrobras
- Hossam A. A. Abdel-Hehim
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Process for the partial solubilization of phosphate rock and obtain...
- Patent number 4,469,504
- Issue date Sep 4, 1984
- Petroleo Brasileiro S.A.-Petrobras
- Hossam Abdel-Hehim
- C05 - FERTILISERS MANUFACTURE THEREOF