Patents by Inventor William M. Fairbank

William M. Fairbank 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).

  • Magnetic structure for NMR applications and the like
    Patent number: 4595899
    Abstract: Magnetic shielding of a magnet such as a first set of superconducting coils as used in nuclear magnetic resonance (NMR) applications includes a second set of coils around and spaced from the first set of coils. The magnetic flux of the second set of coils opposes and offsets the magnetic flux of the first set of coils in the region outside of the second set of coils but is less than the magnetic flux of the first set of coils in the region within the first set of coils. The uniformity of the magnetic flux within the first set of coils is not adversely affected by the magnetic flux produced by the second set of coils. In a preferred embodiment the coils of the first set are independently energized to establish a uniform field within the coils having suppressed lower order derivatives of flux with respect to position within the uniform field. The external field of the first set of coils comprises a dipole which is offset by the field of the second set of coils.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: June 17, 1986
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Todd I. Smith, Michael S. McAshan, William M. Fairbank
  • Apparatus for measuring externally of the human body magnetic susceptibility changes
    Patent number: 4079730
    Abstract: An apparatus for measuring externally of the human body magnetic susceptibility changes within the body particularly the human heart and interpreting these changes in order to quantify the flow of blood.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: March 21, 1978
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: John P. Wikswo, Jr., William M. Fairbank, James E. Opfer
  • Method for measuring externally of the human body magnetic susceptibility changes
    Patent number: 3980076
    Abstract: A method for measuring externally of the human body magnetic susceptibility changes within the body particularly the human heart and interpreting these changes in order to quantify the flow of blood.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: September 14, 1976
    Assignee: The Board of Trustees of Leland Stanford Junior University
    Inventors: John P. Wikswo, Jr., William M. Fairbank, James E. Opfer