Patents by Inventor Denis Lebas

Denis Lebas 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).

  • Bituminous composition
    Patent number: 9074099
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 80% wt, a copolymer comprising one or more vinyl aromatic compounds and one or more conjugated dienes, in an amount of 0.1 to 7 % wt, and sulphur in an amount of 20 to 60% wt, all percentages based on the weight of bitumen, copolymer and sulphur. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: July 7, 2015
    Assignee: Shell Oil Company
    Inventors: Majid Jamshed Chughtai, Jacques Colange, Denis Lebas, David Strickland
  • BITUMINOUS COMPOSITION
    Publication number: 20130210966
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 80% wt, a copolymer comprising one or more vinyl aromatic compounds and one or more conjugated dienes, in an amount of 0.1 to 7 % wt, and sulphur in an amount of 20 to 60% wt, all percentages based on the weight of bitumen, copolymer and sulphur. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Application
    Filed: February 23, 2011
    Publication date: August 15, 2013
    Inventors: Majid Jamshed Chughtai, Jacques Colange, Denis Lebas, David Strickland