Patents by Inventor Bernard Neff

Bernard Neff 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).

  • Process for the preparation of functionalized elastomer/bitumen compositions and their use in coatings
    Patent number: 6218449
    Abstract: The invention provides a method comprising contacting, between 100° C. and 230° C. and under agitation, an elastomer, a functionalising agent and optionally, a peroxide compound. The functionalising agent is a thiolcarboxylic acid polyester or a reaction product of a thiolcarboxylic acid or ester with ethylene sulphide. The functionalised elastomer can also be pre-formed, then incorporated into the bitumen. The resulting compositions are usable directly or after dilution, for forming bituminous binders to produce surfacing, coating and waterproofing materials.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: April 17, 2001
    Assignee: Elf Antar France
    Inventors: Jean-Pascal Planche, Paul Maldonado, Bernard Neff, Thierry Senninger, Annie Zins, St{overscore (e)}phane Drouilhet