Patents by Inventor Lance WASNIEWSKI

Lance WASNIEWSKI 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).

  • Laminated door core for use in fire rated doors and associated methods
    Patent number: 12442245
    Abstract: A laminated door core for use in fire rated doors includes a center layer having a first side and an opposing second side, where the center layer comprises fire rated particleboard. The laminated door core also includes a first layer comprising calcium silicate adhered to the first side of the center layer, a second layer comprising calcium silicate adhered to the second side of the center layer, a first layer of high-density fiberboard adhered over the first layer of calcium silicate, and a second layer of high-density fiberboard adhered over the second layer of calcium silicate. A vertical stile may be positioned along each opposing longitudinal edge of the laminated door core, and a horizontal rail may be positioned along each of a top end and a bottom end of the laminated door core.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: October 14, 2025
    Assignee: Lexington Manufacturing, LLC
    Inventors: Lance Wasniewski, Andre Fortin
  • LAMINATED DOOR CORE FOR USE IN FIRE RATED DOORS AND ASSOCIATED METHODS
    Publication number: 20220186553
    Abstract: A laminated door core for use in fire rated doors includes a center layer having a first side and an opposing second side, where the center layer comprises fire rated particleboard. The laminated door core also includes a first layer comprising calcium silicate adhered to the first side of the center layer, a second layer comprising calcium silicate adhered to the second side of the center layer, a first layer of high-density fiberboard adhered over the first layer of calcium silicate, and a second layer of high-density fiberboard adhered over the second layer of calcium silicate. A vertical stile may be positioned along each opposing longitudinal edge of the laminated door core, and a horizontal rail may be positioned along each of a top end and a bottom end of the laminated door core.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Inventors: Lance WASNIEWSKI, Andre FORTIN