Patents by Inventor Rebecca Bi

Rebecca Bi 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).

  • High pressure, high temperature lubricity tester
    Patent number: 9194784
    Abstract: A method and apparatus for monitoring lubricity consists of a cylindrical cell assembly (80) capable of withstanding high pressure and high temperature with a movable rotor (26) abrading a solid sample (28) while submerged in a liquid sample (74). A loading device (42) moves a bottom shaft (46) supporting the solid sample (28) as said solid sample (28) abrades and is moved upwards, and its movement is measured by a displacement sensor (40). Liquid sample (74) is drained through solid sample (28) into receiver (38) to measure filtration of solid sample (28). Heat is provided via a heater (64) and pressure is controlled via pressurization media (72).
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: November 24, 2015
    Inventors: Hongfeng Bi, Joseph Bi, Rebecca Bi
  • Bob for testing rheology and overcoming the weissenberg effect
    Patent number: 9157846
    Abstract: A hollow bob (20A) with a plurality of circumferentially spaced holes (30A). The hollow bob (20A) is attached to a bob shaft (10A) and is submerged in a test fluid (40A).
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: October 13, 2015
    Inventors: Hongfeng Bi, Joseph Bi, Rebecca Bi