Patents by Inventor Franciscus F. Van Der Vlugt

Franciscus F. Van Der Vlugt 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 resonance imaging apparatus including field-homogenizing magnetic elements
    Patent number: 4771243
    Abstract: In a magnetic resonance imaging apparatus having a comparatively large measurement region, such as used for medical diagnosis, high-order contributions to the magnetic field are compensated for by the addition of pairs of rings made of a soft-magnetic material, so that the homogeneity of the magnetic field is locally increased to a high degree. This makes possible to use a substantially shorter coil while the field homogeneity in the measurement zone is still improved.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: September 13, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Ewoud Vreugdenhil, Franciscus F. Van Der Vlugt