Patents by Inventor Venkata Nagarajan

Venkata Nagarajan 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).

  • Lofted mat for shingles
    Publication number: 20070137131
    Abstract: A roofing shingle comprising a mat having regions of various thicknesses. A layer of asphalt-based material coats the mat and a layer of granules is deposited on the asphalt-coated mat. The variations in the thickness of the regions of the mat give the shingle differences in thickness corresponding to the thickness variations in the regions of the mat, thereby giving the shingle an appearance of depth.
    Type: Application
    Filed: December 30, 2006
    Publication date: June 21, 2007
    Inventors: Venkata Nagarajan, Anthony Rockwell
  • Roofing shingle including sheet as headlap
    Publication number: 20070039274
    Abstract: A roofing shingle includes a buttlap portion with a butt edge and a headlap portion with a head edge. The roofing shingle includes a coated mat which is a roofing mat coated with an organic-based coating material. The roofing shingle also includes a water impermeable sheet adjacent to the coated mat. In one embodiment, the headlap portion of the coated mat is mostly replaced by the sheet. In another embodiment, the roofing shingle has a limited width.
    Type: Application
    Filed: April 3, 2006
    Publication date: February 22, 2007
    Inventors: Edward Harrington, Larry Grubka, Yihsein Teng, Jill Krueger, Venkata Nagarajan, Marc Kuttler, Don Hendershot, Jay Beck