Patents by Inventor Ruixue Cheng

Ruixue Cheng 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).

  • Flow metering
    Patent number: 6865495
    Abstract: In order to reduce the influence of fluid velocity on a measurement of a concentration characteristic of a fluid, the magnitude of an r.m.s. signal V derived from a voltage induced in a sensor provided in relation to the fluid passage is adjusted using a factor dependent upon the measured velocity v of the fluid. Consequently, the accuracy with which the mass flow rate M of the solids in the fluid can be determined is improved.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: March 8, 2005
    Assignee: ABB Limited
    Inventors: John Coulthard, Ruixue Cheng, Peter Asquith
  • Flow metering
    Publication number: 20040011140
    Abstract: In order to reduce the influence of fluid velocity on a measurement of a concentration characteristic of a fluid, the magnitude of an r.m.s. signal V derived from a voltage induced in a sensor provided in relation to the fluid passage is adjusted using a factor dependent upon the measured velocity v of the fluid. Consequently, the accuracy with which the mass flow rate M of the solids in the fluid can be determined is improved.
    Type: Application
    Filed: February 27, 2003
    Publication date: January 22, 2004
    Inventors: John Coulthard, Ruixue Cheng, Peter Asquith