Patents by Inventor Jean-Louis Detienne

Jean-Louis Detienne 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).

  • Flotation of minerals
    Patent number: 4594151
    Abstract: Process of flotation of minerals, which consists of introducing the flotation collector into the mineral pulp to be treated in the form of a microemulsifiable composition. In general, the collector agents are organic compounds containing sulphur, particularly mercaptans, thioethers or polysulphides, which generally are very slightly soluble in water. This process is particularly suitable for minerals based on oxides and sulphides.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: June 10, 1986
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Raymond Delourme, Jean-Louis Detienne, Jacques Komornicki, Jacques Tellier
  • Flotation of minerals
    Patent number: 4526696
    Abstract: Process of flotation of minerals, which consists of introducing the flotation collector into the mineral pulp to be treated in the form of a microemulsifiable composition. In general, the collector agents are organic compounds containing sulphur, particularly mercaptans, thioethers or polysulphides, which generally are very slightly soluble in water. This process is particularly suitable for minerals based on oxides and sulphides.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: July 2, 1985
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Raymond Delourme, Jean-Louis Detienne, Jacques Komornicki, Jacques Tellier
  • Process of production of organic dithio-acids and their application
    Patent number: 4521301
    Abstract: Process for the preparation of an organic dithio-acid by reaction of the corresponding dithio-ester and an alkali metal or alkaline earth metal hydrosulphide in a solvent in the presence of an excess of H.sub.2 S and treatment with a mineral acid. The dithioic acids so obtained can be utilized as collectors for the flotation of minerals.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: June 4, 1985
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Jean-Louis Detienne, Guy Levesque, Pierre Tozzolino
  • Process of production of organic dithio-acids
    Patent number: 4455262
    Abstract: Process for the preparation of an organic dithio-acid by reaction of the corresponding dithio-ester and an alkali metal or alkaline earth metal hydrosulphide in a solvent in the presence of an excess of H.sub.2 S and treatment with a mineral acid. The dithioic acids so obtained can be utilized as collectors for the flotation of minerals.
    Type: Grant
    Filed: April 13, 1982
    Date of Patent: June 19, 1984
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Jean-Louis Detienne, Guy Levesque, Pierre Tozzolino