SOCIETE ANONYME D'ETUDES RECHERCHES ET DE PRODUCTIONS D'AGENTS CHIMIQUES ERPAC

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Patents Grantslast 30 patents

Information Patent Grant
Screw driven sludge thickeners
- Patent number 4,528,098
- Issue date Jul 9, 1985
- Societe Anonyme d'Etudes, de Recherches et de Productions d'Agents Chimiques-...
- Georges M. Treyssac
- B30 - PRESSES
Information Patent Grant
Process for the biological treatment of a liquid effluent on an ads...
- Patent number 4,444,664
- Issue date Apr 24, 1984
- Societe Anonyme d'Etudes, de Recherches et de Productions d'Agents Chimiques-...
- Georges M. Treyssac
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Liquid treatment apparatus
- Patent number 4,338,195
- Issue date Jul 6, 1982
- Societe Anonyme d'Etudes de Recherches et de Productions d'Agents Chimiques E...
- Georges Treyssac
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process and apparatus for separating matter in suspension in a liquid
- Patent number 4,146,472
- Issue date Mar 27, 1979
- Societe Anonyme d'Etudes, de Recherches et de Productions d'Agents Chimiques-...
- Georges M. Treyssac
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...

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