Patents by Inventor Ruald Nellis

Ruald Nellis 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).

  • Internally illuminated display structure
    Patent number: 4490933
    Abstract: To provide a uniformly illuminated panel of essentially uniform brightness hroughout, although illuminated by essentially point source lamps, a box-like structural element (1) is provided having a light emitting surface (2) which has, in the direction of transmission of radiation therethrough, a ratio of reflection to transmission of radiation greater than 50%, and preferably between 80% to 95%, the interior wall surfaces of the hollow structure being reflective, and the hollow structure having a depth dimension, for example about 2 cm, which is small with respect to the height and width dimensions.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: January 1, 1985
    Assignee: Patent-Truehand-Gesellschaft fur Elektrische Gluhlampen GmbH
    Inventors: Ludwig Endres, Ruald Nellis