Patents by Inventor Mostafa Ahmed Elsayed

Mostafa Ahmed Elsayed 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).

  • Controllable magneto-rheological fluid-based dampers for drilling
    Patent number: 7036612
    Abstract: A damping apparatus and method for a drillstring comprising a bit comprising providing to the drillstring a damping mechanism comprising magnetorheological fluid and generating an electromagnetic field affecting the magnetorheological fluid in response to changing ambient conditions encountered by the bit.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: May 2, 2006
    Assignee: Sandia Corporation
    Inventors: David W. Raymond, Mostafa Ahmed Elsayed