Patents by Inventor Philippe A. R. Dumas

Philippe A. R. Dumas 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).

  • Gravity base structure for an offshore platform in arctic regions
    Patent number: 4906138
    Abstract: A gravity base structure for an offshore platform includes a caisson having a bottom slab, a top slab, and inner and outer concentric walls which extend between the bottom and top slabs, and partition walls that form a lattice structure of triangular prisms between the concentric walls, and a plurality of teeth elements which extend outwardly of the outer wall of the caisson for absorbing the force of iceberg impacts and transmitting such force to the caisson.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: March 6, 1990
    Assignee: Doris Engineering
    Inventors: Gerand A. A. Barbaras, Jean Pages, Philippe A. R. Dumas