Patents by Inventor Paul Vignet

Paul Vignet 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).

  • Process and installation for the separation of heavy and light compounds by extraction using a supercritical fluid and nanofiltration
    Patent number: 5961835
    Abstract: A process and installation for the separation of heavy and light compounds is provided. According to the process, a solid or liquid phase containing the compounds to be separated is contacted with a supercritical fluid in an extractor, after which the supercritical fluid containing compounds leaving the extractor undergo nanofiltration for recovering a permeate flow containing the light compounds and a retentate flow containing the heavy compounds. The invention has particular utility for separating fats in food stuffs such as butter or fish oil.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: October 5, 1999
    Assignee: Commissariat a L'Energie Atomique
    Inventors: Stephane Sarrade, Maurice Carles, Christian Perre, Paul Vignet
  • Apparatus for contacting two immiscible liquids with the application of an electric field
    Patent number: 4722787
    Abstract: The invention relates to an apparatus for contacting two immiscible liquids having at least one electrode for the application of an electric field.The electrode is coated with at least two layers of different insulating materials, the first layer which is in contact with the electrode being formed from a liquid insulating material, e.g. benzylneocaprate or transformer oil, while the outer layer is formed from a solid insulating material, e.g. polytetrafluoroethylene.These electrodes are preferably in the form of bars arranged parallel to the fluid flow direction and they are provided with deflectors to ensure that no dispersed phase flow in the form of a film takes place along the bars.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: February 2, 1988
    Assignees: Commissariat a l'Energie Atomique, Association pour la Recherche et le Developpement des Met Hodes et Processus Industriels (A.R.M.I.N.E.S.)
    Inventors: Christine Fombarlet, Michel Guenehec, Francis Lancelot, Laurent Martin, Paul Vignet