Patents by Inventor Steve L. Cromwell

Steve L. Cromwell 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).

  • Horizontal drilling method and apparatus
    Patent number: 5042597
    Abstract: A method and apparatus for drilling highly deviated wells is disclosed. A drilling assembly is attached to a drill string. The drilling assembly includes a bent sub, a pony collar attached to the bent sub, a motor with a bent housing, and a bit. Improved survey collars and bits are also disclosed.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: August 27, 1991
    Assignee: Becfield Horizontal Drilling Services Company
    Inventors: William A. Rehm, Thomas D. Trunk, Timothy D. Baseflug, Steve L. Cromwell, Grady A. Hickman, Ralph D. Nickel, Michael S. Lyon