Patents by Inventor David W. Reagor

David W. Reagor 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 temperature superconducting Josephson junctions and SQUIDs
    Patent number: 6476413
    Abstract: A high temperature superconducting Josephson junction device with ramp-edge geometry in which silver is combined in a composite with YBa2Cu3O7, yttrium-barium-copper-oxide, to form the electrodes, or PrBa2Cu3O7, praseodymium-barium-copper-oxide, to form the weak link.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: November 5, 2002
    Assignee: The Regents of the University of California
    Inventors: Quanxi Jia, Xin Di Wu, Steven R. Foltyn, David W. Reagor
  • Narrowband high temperature superconducting receiver for low frequency radio waves
    Patent number: 6263189
    Abstract: An underground communicating device has a low-noise SQUID using high temperature superconductor components connected to detect a modulated external magnetic flux for outputting a voltage signal spectrum that is related to the varying magnetic flux. A narrow bandwidth filter may be used to select a portion of the voltage signal spectrum that is relatively free of power line noise to output a relatively low noise output signal when operating in a portion of the electromagnetic spectra where such power line noise exists. A demodulator outputs a communication signal, which may be an FM signal, indicative of a modulation on the modulated external magnetic flux.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: July 17, 2001
    Assignee: The Regents of the University of California
    Inventor: David W. Reagor