Patents by Inventor Sydney J. Littleford

Sydney J. Littleford 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).

  • Setting tool and related method
    Patent number: 5447202
    Abstract: A setting tool for setting of any of a variety of down-hole devices used in petroleum/gas producing wells. A known setting tool employs an explosive charge. A disadvantage of this tool is that due to safety considerations, when such tools are in use, radio silence must be maintained on the drilling rig. Another known setting tool employs hydraulic forces. A number of problems exist with known tools.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: September 5, 1995
    Assignee: Petroleum Engineering Services, Ltd.
    Inventor: Sydney J. Littleford