Patents by Inventor Lance Benjamin

Lance Benjamin 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: 6562249
    Abstract: In an improved method of etching apertures in a thin metal sheet to form a shadow mask for a color picture tube, the metal sheet has a first acid-resistant stencil on one major surface thereof and a second acid-resistant stencil on the other major surface thereof. At least one of the stencils has openings therein at locations of intended apertures. The improvement comprises the steps of magnetically holding the metal sheet with a flat magnetic assembly, and moving the magnetic assembly magnetically holding the metal sheet thereon through an etching chamber. The magnetic assembly includes a magnetic layer that is supported on an acid-resistant board.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: May 13, 2003
    Assignees: BMC Industries, Inc., Thomson Consumer Electronics
    Inventors: Craig Clay Eshleman, Charles Michael Wetzel, Randall Eugene McCoy, Leo B. Kriksunov, Lance Benjamin, Derek Harris, Thomas R. Sage
  • Publication number: 20020070196
    Abstract: In an improved method of etching apertures in a thin metal sheet to form a shadow mask for a color picture tube, the metal sheet has a first acid-resistant stencil on one major surface thereof and a second acid-resistant stencil on the other major surface thereof. At least one of the stencils has openings therein at locations of intended apertures. The improvement comprises the steps of magnetically holding the metal sheet with a flat magnetic assembly, and moving the magnetic assembly magnetically holding the metal sheet thereon through an etching chamber. The magnetic assembly includes a magnetic layer that is supported on an acid-resistant board.
    Type: Application
    Filed: July 10, 2001
    Publication date: June 13, 2002
    Applicant: BMC Industries, Inc. and Thomson Consumer Electronics, Inc.
    Inventors: Craig Clay Eshleman, Charles Michael Wetzel, Randall Eugene McCoy, Leo B. Kriksunov, Lance Benjamin, Derek Harris, Thomas R. Sage