Zadson de Franco

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Aracaju, BR

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Patents Grantslast 30 patents

Information Patent Grant
Process for the thermo-chemical cleaning of storage tanks
- Patent number 5,580,391
- Issue date Dec 3, 1996
- Petroleo Brasileiro S.A.-Petrobras
- Zadson d. Franco
- B08 - CLEANING
Information Patent Grant
Continuous process of hydraulic fracturing with foam
- Patent number 4,846,277
- Issue date Jul 11, 1989
- Petroleo Brasileiro S.A.-Petrobras
- Carlos N. Khalil
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...