Patents by Inventor Guillaume Montignac

Guillaume Montignac 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).

  • Mixtures of bitumen, of powdered rubber waste and of polymer, employed as road binder
    Patent number: 5990207
    Abstract: The present invention relates to mixtures of bitmen, of powdered rubber waste and of at least one copolymer (A) of an alpha-olefin and of at least one unsaturated epoxide, such that:the Brookfield viscosity at 180.degree. C. according to NFT Standard 76102 (27 needle) is lower than 1150 mPa s;the difference in absolute value of the softning points (ring-and-ball temperature) according to NFT 66008 between the top and bottom fractions of a mixture stored for 3 days at 180.degree. C. in a vertical tube is smaller than or equal to 5.degree. C. These mixtures are useful as road binders.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: November 23, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Patrice Perret, Jean Lebez, Guillaume Montignac