Patents by Inventor Roger T. Alig

Roger T. Alig 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: 4528476
    Abstract: An inline electron gun, for use in a cathode-ray tube, comprises four electrode means. The first electrode means forms three inline electron beams including a center beam and two outer beams. The second electrode means pre-focuses each of the electron beams individually and converges the two outer beams toward the center beam to cross-over each other within the electron gun. The third electrode means provides a common main focus lens for the three electron beams at the crossover of the beams. And, the fourth electrode means provides a common post-focusing lens for the three electron beams which causes the two outer beams to converge with the center beam near a screen of the tube.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: July 9, 1985
    Assignee: RCA Corporation
    Inventor: Roger T. Alig