Patents by Inventor Harold Bell Law

Harold Bell Law 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).

  • Method for forming a color television picture tube screen
    Patent number: 4049451
    Abstract: A substantially continuous line screen structure pattern is formed in a color television picture tube having an interrupted-aperture shadow mask by applying a photosensitive material to a screen support and projecting light from an extended source through the shadow mask apertures and onto the coated screen support. In a preferred embodiment, the line screen is formed by projecting light from a line source through a shadow mask having a plurality of rows of elongated apertures and onto the coated screen support.
    Type: Grant
    Filed: January 14, 1972
    Date of Patent: September 20, 1977
    Assignee: RCA Corporation
    Inventor: Harold Bell Law
  • Apparatus for forming a color television picture tube screen
    Patent number: 4034382
    Abstract: A substantially continuous line screen structure pattern is formed in a color television picture tube having an interrupted-aperture shadow mask by applying a photosensitive material to a screen support and projecting light from an extended source through the shadow mask apertures and onto the coated screen support. In a preferred embodiment, the line screen is formed by projecting light from a line source through a shadow mask having a plurality of rows of elongated apertures and onto the coated screen support.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: July 5, 1977
    Assignee: RCA Corporation
    Inventor: Harold Bell Law