Patents by Inventor Dinh N. Truong

Dinh N. Truong 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).

  • Concentrated liquid solutions of scleroglucan
    Patent number: 5215681
    Abstract: The invention relates to new concentrated liquid solutions of polysaccharides, characterized in that they are prepared by ultrafiltration of a dilute solution of polymer to which a surface-active agent has been added.The solutions can be employed, after dilution, in particular as a thickening agent for aqueous fluids.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: June 1, 1993
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Dinh N. Truong, Jacques Gadioux, Dominique Sarazin