Patents by Inventor Bruno Gonthier

Bruno Gonthier 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).

  • Combustion inhibitors on a base of oxygenated polyurethane elastomer which contains fibers for the double base propellant
    Patent number: 4536235
    Abstract: A combustion inhibitor for a double base propellant is described which comprises a polyurethane elastomer having in chemically combined form a compound which is an aliphatic polyester polyol or an aliphatic polyether polyol, or a mixture thereof, which compound contains 2-6 hydroxyl groups per molecule, and an aliphatic polyisocyanate. The inhibitor also contains 0.1-10 parts by weight of mineral fibers or thermostable organic fibers of length between 0.1 mm and 15 mm per 100 parts inhibitor. The inhibitor may contain an organic gasifiable charge and an aliphatic plasticizer.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: August 20, 1985
    Assignee: Societe Nationale Des Poudres et Explosifs
    Inventors: Andre Lelu, Bruno Gonthier, Jean Grignon, Jean-Michel Tauzia