Patents by Inventor Jiang Hsieh

Jiang Hsieh 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).

  • Asymmetric S.P.E.C.T. collimator which surrounds the patient
    Patent number: 4774410
    Abstract: First, second, third and fourth sections of a collimator are arranged to bound an asymmetric interior region. The collimator has one and only one focal point, which is located inside the body to be imaged. The first and second sections are curved and are preferably circular arcs with different radii of curvature. The third and fourth sections are straight.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: September 27, 1988
    Assignee: Siemens Gammasonics, Inc.
    Inventor: Jiang Hsieh
  • Astigmatic collimator
    Patent number: 4670657
    Abstract: A collimator collimates radiation so that each beam passes through two focal lines. One of the lines is in a transaxial plane and the other line is in an axial plane. The focal length in the transaxial plane is longer than is the focal length in the axial plane. In the preferred embodiment, the focal lines are perpendicular, whereby an anamorphic collimator is produced. Alternatively, the focal lines are nonparallel, producing an astigmatic collimator.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: June 2, 1987
    Assignee: Siemens Gammasonics, Inc.
    Inventors: Eric G. Hawman, Jiang Hsieh