Patents by Inventor Alain Ladousse

Alain Ladousse 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).

  • Oleophilic biodegrading additive and method of treating hybrocarbon polluted medium
    Patent number: 5618725
    Abstract: Biodegradation additive characterized in that it consists of a mixture of (i) at least one assimilable nitrogen source composed of at least one unsubstituted or substituted amino acid; (ii) at least one phosphorus source, the ratio of nitrogen to phosphorus ranging from 2 to 100, said additive being subjected to a treatment to make it oleophilic. The invention also concerns an additive in accordance with any of the foregoing claims for the biodegradation of hydrocarbons.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: April 8, 1997
    Assignee: Elf Aquitaine
    Inventors: Anne Basseres, Patrick Eyraud, Alain Ladousse
  • Process for the protection of solid surfaces, particularly coastal areas, against pollution by hydrocarbons
    Patent number: 5395646
    Abstract: A process affording protection to solid surfaces and especially coastal areas against hydrocarbon pollution involves applying a protective layer composed of polysaccharides containing pendant carboxyl groups, such as alginates or lightly methylated pectins.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: March 7, 1995
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Anne Basseres, Alain Ladousse
  • Process for removing ammonia from waste waters
    Patent number: 5294348
    Abstract: A method for removing ammonia, or ammonia and phosphates from industrial agricultural or household effluents by causing precipitation as magnesium ammonium phosphate by means of a liquid reagent containing magnesium and phosphate ions and an acid. The effluents have more than 1 gle of ammoniacal nitrogen and the pH is adjusted to between 9 and 11 after addition of the liquid reagent.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: March 15, 1994
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Patrick Horny, Alain Ladousse