Patents by Inventor Ronald F. Dziuba

Ronald F. Dziuba 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).

  • Cryogenic current comparator based on liquid nitrogen temperature superconductors
    Patent number: 5880583
    Abstract: A cryogenic current comparator device is based on the magnetic shielding properties of superconducting tubes and maintains electrical currents being compared in a highly exact integer ratio. One pair of superconducting tubes are arranged adjacent to each other so that the longitudinal axis of each tube are parallel. A coil of current carrying wire is formed by winding the wire down through a longitudinal bore of the first tube and then back up the longitudinal bore of the second tube to form at least one turn or loop of the coil. A second, identical pair of superconducting tubes is placed adjacent and longitudinally parallel to the first pair of tubes so that a superconducting quantum interference device magnetometer is surrounded by the four tubes in order to measure a magnetic field induced by the current traveling through the coils. The device operates at a temperature of 77 degrees K.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: March 9, 1999
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Randolph E. Elmquist, Ronald F. Dziuba