Patents by Inventor Patrick Eyraud

Patrick Eyraud 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