Patents by Inventor Aziz J. Merchant

Aziz J. Merchant 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).

  • Valve with increased inlet flow
    Patent number: 6536467
    Abstract: A check valve having a profiled entrance that reduces net positive suction head for piston and plunger pumps. The valve inlet surface has a cross-section that may include a curved portion that corresponds to a portion of a cone, circle, ellipse, hyperbola, or parabola.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: March 25, 2003
    Assignee: National-Oilwell, L.P.
    Inventors: Samuel S. Wu, George A. Hall, Aziz J. Merchant
  • Valve with increased inlet flow
    Publication number: 20020096217
    Abstract: A check valve having a profiled entrance that reduces net positive suction head for piston and plunger pumps. The valve inlet surface has a cross-section that may include a curved portion that corresponds to a portion of a cone, circle, ellipse, hyperbola, or parabola.
    Type: Application
    Filed: December 5, 2000
    Publication date: July 25, 2002
    Inventors: Samuel S. Wu, George A. Hall, Aziz J. Merchant