Patents by Inventor Juan A. Campos

Juan A. Campos 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).

  • Curved flapper valve
    Patent number: 6772842
    Abstract: A flapper valve having a curved flapper and a seat, the flapper and seat each having complementary undulating and tapered perimeters, with sealing surfaces designed to maintain seal integrity under higher pressure, for a given outer diameter to inner diameter ratio, compared to prior art flapper valves.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: August 10, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Dennis M. Read, Alfred Hernandez, Juan A. Campos
  • Curved flapper valve
    Publication number: 20040000407
    Abstract: A flapper valve having a curved flapper and a seat, the flapper and seat each having complementary undulating and tapered perimeters, with sealing surfaces designed to maintain seal integrity under higher pressure, for a given outer diameter to inner diameter ratio, compared to prior art flapper valves.
    Type: Application
    Filed: September 5, 2002
    Publication date: January 1, 2004
    Inventors: Alfred Hernandez, Juan A. Campos