Patents by Inventor Johan Steiner

Johan Steiner 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).

  • Methods and apparatus for making flat tension mask color cathode ray tubes
    Patent number: 4902257
    Abstract: This disclosure describes method and apparatus useful in the manufacture of shadow mask color cathode ray tubes of the flat tension mask type, wherein the shadow masks and associated glass front panels are respectively interchangeable during mask-panel assembly.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: February 20, 1990
    Assignee: Zenith Electronics Corporation
    Inventors: Robert Adler, James R. Fendley, Howard G. Lange, Charles J. Prazak, III, Johan Steiner, Paul Strauss