Patents by Inventor Theodore A. Bieler

Theodore A. Bieler 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).

  • Laser etching of foam substrate
    Patent number: 4933205
    Abstract: A foam plastic substrate has an image formed on its surface by differential ablation by a laser. A composition is applied to the surface in the shape of the image to be formed and has an ablation rate different to that of the foam substrate. After irradiation of the surface, the image is formed in relief on the surface.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: June 12, 1990
    Inventors: Walter W. Duley, Theodore A. Bieler
  • Laser etching of foam substrate
    Patent number: 4769257
    Abstract: A foamed plastics substrate has an image formed on its surface by differential ablation by a laser. A composition is applied to the surface in the shape of the image to be formed and has an ablation rate different to that of the foam. After irradiation of the surface, the image is formed in relief on the surface.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: September 6, 1988
    Inventors: Walter W. Duley, Theodore A. Bieler