Patents by Inventor Ueli Graf

Ueli Graf 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).

  • Blade collimator for radiation therapy
    Patent number: 5889834
    Abstract: The accuracy of radiation therapy is enhanced with the blade collimator of the claimed invention. Particularly, this collimator includes a support device for supporting at least two sets of radiation attenuating blades in a single plane or layer. The blades are reciprocally movable within this support. Shaping of the therapy may be increased by constructing the blades to include a varying width increasing from the central blade toward the exterior blades.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: March 30, 1999
    Assignee: Brainlab Med. Computersysteme GmbH
    Inventors: Stefan Vilsmeier, Michael Bertram, Joseph Doyle, Ueli Graf