Patents by Inventor Benoit Pradet

Benoit Pradet 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).

  • Stationary phase, preparation thereof and chromatographic column containing same
    Patent number: 4755294
    Abstract: The invention relates to a method of preparing a stationary silica phase for the purpose of packing a chromatographic column intended for the liquid-phase separation of components. There are thus effected a first grafting with functional groups of the amine type, a complete hydrolysis of the stationary phase so grafted, and finally a further grafting with functional groups of the alkyl type, optionally substituted. A chromatographic column packed with the stationary silica phase can be used to separate the constituents of a petroleum product.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: July 5, 1988
    Assignee: Societe Anonyme dite Compagnie Francaise de Raffinage
    Inventors: Benoit Pradet, Jean M. Colin, Robert Rosset, Gisele Vion