Patents by Inventor Yung Sheng Cha

Yung Sheng Cha 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).

  • Superconducting magnetic control system for manipulation of particulate matter and magnetic probes in medical and industrial applications
    Patent number: 7073513
    Abstract: A system and method of controlling movement of magnetic material with at least first and second high temperature superconductors at spaced locations. A plurality of solenoids are associated with the superconductors to induce a persistent currents in preselected high temperature superconductors establishing a plurality of magnetic fields in response to pulsed currents introduced to one or more of the solenoids. Control mechanism in communication with said solenoids and/or said high temperature superconductors are used to demagnetize selected ones of the high temperature superconductors to reduce the magnetic fields substantially to zero. Magnetic material is moved between magnetic fields by establishing the presence thereof and thereafter reducing magnetic fields substantially to zero and establishing magnetic fields in other superconductors arranged in a predetermined configuration.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: July 11, 2006
    Assignee: The University of Chicago
    Inventors: Yung Sheng Cha, John R. Hull, Thomas R. Askew
  • Superconducting magnetic control system for manipulation of particulate matter and magnetic probes in medical and industrial applications
    Publication number: 20040242429
    Abstract: A system and method of controlling movement of magnetic material with at least first and second high temperature superconductors at spaced locations. A plurality of solenoids are associated with the superconductors to induce a persistent currents in preselected high temperature superconductors establishing a plurality of magnetic fields in response to pulsed currents introduced to one or more of the solenoids. Control mechanism in communication with said solenoids and/or said high temperature superconductors are used to demagnetize selected ones of the high temperature superconductors to reduce the magnetic fields substantially to zero. Magnetic material is moved between magnetic fields by establishing the presence thereof and thereafter reducing magnetic fields substantially to zero and establishing magnetic fields in other superconductors arranged in a predetermined configuration.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 2, 2004
    Applicant: The University of Chicago
    Inventors: Yung Sheng Cha, John R. Hull, Thomas R. Askew