Patents by Inventor Hassan Abdollahi

Hassan Abdollahi 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).

  • Stair system
    Patent number: 6115975
    Abstract: A stair system employing an improved stair nose molding and back molding which provides for a stair system having a free-floating riser and a free-floating tread, the stair nose molding having a cutout with tongue for receiving grooved stair tread and a groove for receiving a riser in a sliding arrangement. The stair back molding having a groove to receive the bottom edge of the riser in a sliding arrangement. The tread is secured to the stair nose molding, the riser being slidably secured in the stair nose molding and the stair back molding, and the end of the tread being secured along with the back stair molding to the tread subflooring.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: September 12, 2000
    Inventor: Hassan Abdollahi
  • Floor
    Patent number: D450859
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: November 20, 2001
    Inventor: Hassan Abdollahi