Patents by Inventor David B. Zax

David B. Zax 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 detecting target species having quadropolar muclei by stochastic nuclear quadrupole resonance
    Patent number: 5608321
    Abstract: One aspect of the present invention is a method for detecting a class of target species containing quadrupolar nuclei in a specimen by nuclear quadrupole resonance, comprising: (a) generating a random or pseudo-random train of rf pulses; (b) irradiating the specimen with the train of rf pulses; (c) detecting an NQR signal in response to irradiating the specimen; (d) cross-correlating the NQR signal with the random or pseudo-random train of rf pulses, thereby generating a free induction decay signal; and (e) converting the free induction decay signal into a frequency domain signal. Another aspect of the present invention is an apparatus for carrying out the method of the invention.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: March 4, 1997
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Allen N. Garroway, Joel B. Miller, David B. Zax, Ming-Yuan Liao
  • Method and apparatus for measuring nuclear magnetic properties
    Patent number: 4710714
    Abstract: A method for studying the chemical and structural characteristics of materials is disclosed. The method includes placement of a sample material in a high strength polarizing magnetic field to order the sample nucleii. The condition used to order the sample is then removed abruptly and the ordering of the sample allowed to evolve for a time interval. At the end of the time interval, the ordering of the sample is measured by conventional nuclear magnetic resonance techniques.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: December 1, 1987
    Assignees: The Regents of the University of California, Daniel Paul Weitekamp
    Inventors: Daniel P. Weitekamp, Anthony Bielecki, David B. Zax, Kurt W. Zilm, Alexander Pines