Patents by Inventor Pham van Doan

Pham van Doan 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).

  • Device for detecting superconductor quenching and application to a superconducting current limiter
    Patent number: 5063472
    Abstract: Device for detecting the quenching of part a superconducting element comprising two identical superconducting conductors electrically connected in parallel is provided with means (104, 105, 109, 110) of detecting a difference in intensity or phase between the currents flowing in the conductors. An application to a superconducting current limiter is described.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: November 5, 1991
    Assignee: GEC Alsthom SA
    Inventors: Pham van Doan, Jean-Pierre Dupraz, Alain Fevrier