Patents by Inventor Kishin Moorjani

Kishin Moorjani 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).

  • Microwave method for detection of weak links in superconductors
    Patent number: 5059891
    Abstract: Weak links in superconductors are detected by observing the effect of magnetic field modulation on the microwave resistance of superconductors. The phase detected response to the magnetic modulation can show a peak at T.sub.c. The presence of peak(s) at temperatures below T.sub.c indicates the presence of weak links in the superconductor.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: October 22, 1991
    Assignee: The Johns Hopkins University
    Inventors: Joseph Bohandy, Boris F. Kim, Terry E. Phillips, Frank J. Adrian, Kishin Moorjani
  • Magnetometer based on the magnetically modulated resistance of a superconductor
    Patent number: 5039944
    Abstract: The invention relates to an apparatus and method to detect a magnetic field by measuring the magnetically modulated resistance of a superconductor maintained at its phase transition temperature (T.sub.c).
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: August 13, 1991
    Assignee: The Johns Hopkins University
    Inventors: Boris F. Kim, Joseph Bohandy, Frank J. Adrian, Kishin Moorjani
  • Method for detection of weak links in the current path of electrically continuous superconductors
    Patent number: 4904929
    Abstract: Weak links in electrically continuous superconductors are detected by observing the effect of magnetic field modulation on the dc resistance of superconductors. The phase detected response to the magnetic modulation shows a peak at T.sub.c. The presence of a second peak at temperatures below T.sub.c, and concomitantly the appearance of a tail on the low temperature end of the dc resistance vs temperature curve indicates the presence of weak links in the superconductor.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: February 27, 1990
    Assignee: The Johns Hopkins University
    Inventors: Joseph Bohandy, Boris F. Kim, Terry E. Phillips, Frank J. Adrian, Kishin Moorjani
  • Novel technique using magnetic field dependent phase detection for detection of superconductivity
    Patent number: 4851762
    Abstract: The invention relates to a method and apparatus to detect the superconductive state by measuring the change in the resistance of a sample. A dc magnetic field is imposed on the sample while the temperature is swept. The strength of the magnetic field is held below the critical value and is frequency modulated by the application of an ac field in such a way that total magnetic field is always positive. The resistance of the sample is measured incrementally as the temperature is swept and is phase detected at the modulation frequency. According to this embodiment, only magnetic field dependent changes demonstrating a precipitous drop in resistance identify a composition as superconductive.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: July 25, 1989
    Assignee: The John Hopkins University
    Inventors: Boris F. Kim, Joseph Bohandy, Kishin Moorjani, Frank J. Adrain