Patents by Inventor Charles T. Skillern

Charles T. Skillern 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).

  • Modular staircase system
    Patent number: 5613341
    Abstract: An "off the shelf" modular staircase system is described that allows for a flexible fit of the staircase into custom plan areas and/or areas in which the ceiling-to-floor height varies. The modules form a complete staircase and not a mere skeleton of a staircase. Furthermore, the modular staircase system, because it allows for the mass production and conventional transportation of the various stair modules, results in the reduced cost of a staircase and reduced construction time. Individual stair modules may be formed as a unitary structure out of a moldable material.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: March 25, 1997
    Inventor: Charles T. Skillern
  • Modular staircase system
    Patent number: 5502933
    Abstract: An "off the shelf" modular staircase system is described that allows for a flexible fit of the staircase into custom plan areas and/or areas in which the ceiling-to-floor height varies. The modules form a complete staircase and not a mere skeleton of a staircase. Furthermore, the modular staircase system, because it allows for the mass production and conventional transportation of the various stair modules, results in the reduced cost of a staircase and reduced construction time. Individual stair modules may be formed as a unitary structure out of a moldable material.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: April 2, 1996
    Inventor: Charles T. Skillern