Patents by Inventor Riqiang Fu

Riqiang Fu 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).

  • Patent number: 5581182
    Abstract: Methods and apparatus for broadband decoupling in nuclear magnetic resonance with chirp and other RF pulses are disclosed. Such methods may include the step of positioning the sample in a static magnetic field. Additional steps may define a first cycle of pulses, such as chirp pulses, wherein at least two of the pulses have a different initial phase angle from each other and may define a second cycle of pulses wherein at least two of the pulses in the second cycle have an initial phase angle different from the initial phase angles of the pulses in the first cycle. Further steps may repeatedly generate a supercycle of the first and second cycles to produce pulses for inverting the longitudinal magnetization in the sample and may also detect the signals emitted by the sample in response to inversion of the longitudinal magnetization. Alternatively, the chirp pulses in the first and second cycles may be defined to sweep a bandwidth of 100 kHz or more.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: December 3, 1996
    Assignee: Florida State University
    Inventors: Riqiang Fu, Geoffrey Bodenhausen