Patents by Inventor Stephen Paul Carrington

Stephen Paul Carrington 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).

  • Polymeric solutions rheometer
    Patent number: 6951128
    Abstract: A method for determination of the extensional rheological properties of a liquid comprises application to a sample of liquid in a closed system of a pulsed oscillatory alternating flow in a geometry creating an extension flow surrounding a stagnation point and measuring the pressure drop in the liquid across the stagnation point. The alternating displacement may be applied from the ends of each limb in a given direction simultaneously, thereby providing symmetrical flow. The method may be carried out on very small sample volumes of dilute polymer solutions.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: October 4, 2005
    Assignee: University of Bristol
    Inventors: Jeffrey Arthur Odell, Stephen Paul Carrington
  • Polymeric solutions rheometer
    Publication number: 20040074287
    Abstract: A method for determination of the extensional rheological properties of a liquid comprises application to a sample of liquid in a closed system of a pulsed oscillatory alternating flow in a geometry creating an extensional flow surrounding a stagnation point and measuring the pressure drop in the liquid across the stagnation point. The alternating displacement may be applied from the ends of each limb in a given direction simultaneously, thereby providing symmetrical flow. The method may be carried out on very small sample volumes of dilute polymer solutions.
    Type: Application
    Filed: November 25, 2003
    Publication date: April 22, 2004
    Inventors: Jeffrey Arthur Odell, Stephen Paul Carrington