Patents by Inventor Roland N. Harshbarger

Roland N. Harshbarger 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).

  • System for etching patterns of small openings on a continuous strip of metal
    Patent number: 4124437
    Abstract: An etching system having a first member for unrolling and fastening a protective film on one side of a continuous strip of metal and a second member for smoothly stripping the protective film from the continuous strip of metal after the continuous strip of metal and the protective film have passed between sets of spray jets that are located on opposite sides of the continuous strip of metal. Further etching and rinsing stations are provided for completing the etching process to enable mass production of television aperture masks having a plurality of openings which have a dimension on the order of or less than the thickness of the mask material.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: November 7, 1978
    Assignee: Buckbee-Mears Company
    Inventors: Herbert M. Bond, Charles E. Ring, John A. Edgar, Ronald Bennett, Willis K. Paul, Roland N. Harshbarger