Patents by Inventor Eugene S. Neufeld

Eugene S. Neufeld 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).

  • Patent number: 4195431
    Abstract: A booklike article such as a menu, opera score, sports program, theatre program comprises a first relatively transparent layer having impressed thereon indicia representative of graphic data associated with the typical article. Underlying the transparent layer is an electroluminescent panel which upon application of a suitable operating potential, will emit radiation in the light spectrum, thus enabling the grahic data to be viewed in dark environments. A source of potential is located in the spine of the book. The source is battery operated and supplies an output for energizing the panel.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: April 1, 1980
    Inventor: Eugene S. Neufeld