Patents by Inventor Andree Plessis

Andree Plessis 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).

  • Dispersant and biodegradant formulations for treating hydrocarbon-polluted waters
    Patent number: 4382873
    Abstract: Dispersant and biodegradant formulations are manufactured by admixing at least one melamine derivative with at least one compound having a hydroxy function, at least one phosphorus compound and at least one surfactive agent. Aqueous emulsions obtained from these formulations are also provided.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: May 10, 1983
    Assignee: Institut Francais du Petrole
    Inventors: Claude Gatellier, Andree Plessis, Patrick Gateau, Jean-Pierre Durand