Patents by Inventor Andrew R. Lonergan

Andrew R. Lonergan 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 of and apparatus for obtaining NMR information
    Patent number: 5608322
    Abstract: Spatial NMR information is obtained from a sample by applying a magnetic field having a static component and two orthogonal periodically-varying gradient components. A recurring cycle of rf excitation pulses is applied. One of the gradient components is reduced in amplitude from its maximum to zero over a period and the other gradient component is subsequently increased from zero to its maximum over a period. The said periods are both longer than the cycle time.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: March 4, 1997
    Assignee: British Technology Group Limited
    Inventors: Andrew R. Lonergan, Peter J. McDonald