Patents by Inventor Etienne Larribau

Etienne Larribau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the flotation of sulfide ores
    Patent number: 4274950
    Abstract: Process using collectors for the flotation of minerals which allow the separation or enrichment of certain minerals, even at pH values around 7. These collectors are organic sulphides of the type R--S--R', in which the two groups R and R' are different and at least one of them preferably carries a substituent including oxygen or sulphur. The collectors are desirably used in a proportion of 10-100 ppm in relation to the weight of the mineral subject to flotation.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: June 23, 1981
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Etienne Larribau, Pierre Tozzolino