Patents by Inventor Claude Blet

Claude Blet 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).

  • Novel water-insensitive materials intended for public works; process and chemical composition for their obtention
    Patent number: 4735658
    Abstract: The invention describes a novel material intended for use in public works, constituted by a mixture of granular, alluvial or clay soils, of hydrophilic polymers and cationic hydrophobating additives, wherein this material presents a high insensitivity to variations of ambient humidity and is intended in particular for use with building roads.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: April 5, 1988
    Assignees: Ceca S.A., L'Etat Francais
    Inventors: Claude Blet, Didier Chabert, Laurent Frouin, Jean-Louis Reymonet, Ngoc L. Tran