Patents by Inventor Sudhakar Ellapragada Cherukupalli

Sudhakar Ellapragada Cherukupalli 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).

  • Method and apparatus for measuring voltage using electric field sensors
    Patent number: 6252388
    Abstract: A voltage sensor for measuring the voltage on high voltage lines is formed by an electrically isolating section of dielectric material that structures the electric field generated by a voltage difference between the two ends of the isolating section and provides screening of the electric field from other electric field sources external to the isolating section. At least one electric field sensor is provided to sense the electric field in the isolating section the output(s) of which are weighted and combined to provide an accurate measurement of the voltage between the two ends. The electric field sensors are located and their outputs are combined so that error in the voltage measurement due to the influence of external electric field sources is within an acceptable range.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: June 26, 2001
    Assignee: NxtPhase Corporation
    Inventors: Nicolas August Fleming Jaeger, Farnoosh Rahmatian, Patrick Pablo Chavez, Sudhakar Ellapragada Cherukupalli, Gregory Samuel Polovick