Patents by Inventor Duane Frederick Sippola

Duane Frederick Sippola 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: 7845122
    Abstract: Disclosed is an embedment tile for producing a tactilely detectable surface in a moldable material and method for using same. The tile comprises a tile member substantially planar in form, having a pattern of upwardly extending projections on its upper surface forming a tactilely detectable pattern and two or more cross beams on the lower surface of the tile member, the cross beams having hollow chambers defined by a sidewall, end openings and optional apertures to allow for the release of air and moldable material from the exterior into the hollow chambers of the cross beams as the tile is embedded in the material, thus easing and speeding installation of the tile in the moldable material. The embedment tile may further consist of support members that function to support and further interlock the embedment tile to the moldable material once set.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: December 7, 2010
    Assignee: MetaDome, LLC
    Inventor: Duane Frederick Sippola
  • Patent number: 7001103
    Abstract: Disclosed is a stamp for forming a tactile-detectable warning surface in moldable concrete or asphalt and method for employing same. The stamp consists of a mold member having truncated dome shaped indentations distributed therein in a warning pattern, each indentation optionally having an air hole located centrally therein, and, form rails distributed between indentations on the lower surface of the mold member and projecting downward there from, so as to force an even and consistent distribution of the moldable material into the indentations when the form rails are worked downward into the surface of the moldable material to form truncated domes. The stamp may further comprise one or more handles and upper rails distributed on the upper surface of the mold member.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: February 21, 2006
    Assignee: Meta Dome, L.L.C.
    Inventor: Duane Frederick Sippola