Patents by Inventor Etienne Benard

Etienne Benard 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).

  • Composite material based on rubbers of the silicone type and of the ethylene-propylene copolymer or terpolymer type
    Patent number: 5346760
    Abstract: A composite material comprising at least two elastomer layers, the first layer having a first composition comprising from 40 to 80 percent by weight of silicone rubber, the second layer having a second composition comprising from 50 to 100 percent by weight of rubber of the ethylene-propylene copolymer and/or terpolymer type, wherein the first composition further contains from 20 to 60 percent by weight of rubber of the ethylene-propylene copolymer and/or terpolymer type, and each of the two compositions contains more than 5 percent, and preferably from 5 to 60 percent, by weight of silica.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: September 13, 1994
    Assignee: Total Ruffinage Distribution S.A.
    Inventors: Guy Lemoine, Etienne Benard, Christian Exandier