Patents by Inventor Jean-Claude B. Roques

Jean-Claude B. Roques 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).

  • Tubular steel members for underwater pipelines
    Patent number: 4300598
    Abstract: Tubular members of lightly alloyed weldable steel are utilized as a stiffening member for pipelines to prevent buckling and the spread of cracks in pipelines laid off the coast, either under or above water. The tubular member (R, R1) is constructed of centrifugally cast steel and is adapted to be connected to another similar member or to a standard pipe (T) of the pipeline. The member has a substantially increased thickness (2, 15) and is subjected to thermal treatment in order to obtain a homogeneous ferritic structure.
    Type: Grant
    Filed: June 12, 1979
    Date of Patent: November 17, 1981
    Assignee: Pont-A-Mousson S.A.
    Inventors: Alain L. A. Royer, Jean-Claude B. Roques, Bernard J. L. Dumas