Patents by Inventor Hugh Walborn

Hugh Walborn 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).

  • Mask for viewing reduced-size radiographic film, particularly mammography film
    Patent number: 5818624
    Abstract: A radiographic film mask includes a planar sheet sized for receipt on an illuminated radiographic film examination box. The mask has two opaque sections and a transparent section. The transparent section is disposed on the sheet between the two opaque sections to form a radiographic film viewing area which has an area less than the entire area of the sheet. The sheet may include semi-transparent sections which border the viewing area and interconnect the opaque portions to provide reduced transmission of light along the marginal edges of the radiographic film.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: October 6, 1998
    Inventors: John Patterson, Raynor Sturgis, Hugh Walborn, Lawrence Wilhelm