Patents by Inventor Leonard B. Bryan

Leonard B. Bryan 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).

  • Cutting and recovery tool
    Patent number: 4703802
    Abstract: A cutting and recovery tool for a well-head, having a housing which is adapted to engage with a side wall of the well-head to lock them together, and a mandrel extending through the housing and rotatable relative to the housing and adapted to carry a radially-acting cutter which severs the well-head below the area of engagement of the housing. This allows the well-head to be severed and withdrawn in a single operation.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: November 3, 1987
    Assignee: Deepwater Oil Services Limited of Unit Ten
    Inventors: Leonard B. Bryan, Geoffrey O. Rouse, Hector McDonald