Patents by Inventor Frederic Lefort

Frederic Lefort 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).

  • Method and installation for the production of lime water from deionised water
    Patent number: 7404898
    Abstract: A method of producing lime water comprising deionising dilution water by membrane filtration, distillation or an ion exchange resin and adding silicate ions to the deionised water. Thereafter, the deionised water treated with the silicate ions is mixed with milk of lime to form lime water. In one embodiment, the milk of lime and dilution water are mixed in a saturator where the silicate ions are introduced.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: July 29, 2008
    Assignee: OTV SA
    Inventors: Franck Clausse, Philippe Marteil, Germain LeBouc, Frederic LeFort
  • Method for treating water containing manganese
    Patent number: 7273556
    Abstract: The invention concerns a method for treating water for human consumption, so as to eliminate manganese and possibly other metals comprising steps which consist in: causing said water to pass at least over a bed of filtering material (3) consisting at least partly of manganese dioxide granules, said granules having a real density ranging between 3.5 and 4.5 and a hardness higher than 6 on the Mosh scale; regenerating, if necessary, said manganese dioxide, said regeneration being carried out mechanically.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: September 25, 2007
    Assignee: OTV S.A.
    Inventor: Frederic Lefort
  • Method and installation for the production of lime water from deionised water
    Publication number: 20050247626
    Abstract: A method of producing lime water comprising deionising dilution water by membrane filtration, distillation or an ion exchange resin and adding silicate ions to the deionised water. Thereafter, the deionised water treated with the silicate ions is mixed with milk of lime to form lime water. In one embodiment, the milk of lime and dilution water are mixed in a saturator where the silicate ions are introduced.
    Type: Application
    Filed: July 23, 2003
    Publication date: November 10, 2005
    Inventors: Franck Clausse, Philippe Marteil, Germain LeBouc, Frederic LeFort
  • Method for treating water containing manganese
    Publication number: 20040035796
    Abstract: The invention concerns a method for treating water for human consumption, so as to eliminate manganese and possibly other metals comprising steps which consist in: causing said water to pass at least over a bed of filtering material (3) consisting at least partly of manganese dioxide granules, said granules having a real density ranging between 3.5 and 4.5 and a hardness higher than 6 on the Mosh scale; regenerating, if necessary, said manganese dioxide, said regeneration being carried out mechanically.
    Type: Application
    Filed: September 11, 2003
    Publication date: February 26, 2004
    Inventor: Frederic Lefort