Patents Assigned to Correct Building Products, L.L.C.
  • Planking system and method
    Patent number: 7644556
    Abstract: A novel planking system utilizing an inventive groove design is provided. The novel groove is defined by two opposing side walls and a groove end wall. The groove side walls present two generally opposed tongue-engaging projections that automatically provide a uniform space between planks during installation, and accommodate expansion of the planks after installation by breaking away when force is exerted on the projections by an adjacent plank. The present invention is also concerned with a combination of planks having an inventive tongue-and-groove configuration, as well as inventive methods of assembling planks to accommodate the expansion and contraction of the assembled planks after installation.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: January 12, 2010
    Assignee: Correct Building Products, L.L.C.
    Inventors: Martin Grohman, Robert G. Rottinghaus
  • Hidden deck fastener system
    Patent number: 7409803
    Abstract: A deck system employing a plurality of substantially hidden fasteners to couple the floor boards of the deck to the joists. Each hidden fastener is rigidly coupled to a respective joist and positioned between a pair of adjacent floorboards. Each fastener forms a mating relationship with specially configured sides of the boards to thereby rigidly couple the boards to the joists.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: August 12, 2008
    Assignee: Correct Building Products, L.L.C.
    Inventor: Martin Grohman
  • Composite products comprising cellulosic materials and synthetic resins and methods of making the same
    Patent number: 6737006
    Abstract: New wood-synthetic resin composite products and methods of forming these products are provided. The products comprise a cellulosic or fibrous material and polypropylene (preferably reactor flake polypropylene). The products are formed by passing ingredients including the fibrous material and polypropylene through an extruder (preferably a twin screw extruder) at temperatures of from about 150-260° C. The extruded composite products have physical properties very similar to those of natural wood, including high tensile strengths, high compressive strengths, and high densities.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: May 18, 2004
    Assignee: Correct Building Products, L.L.C.
    Inventor: Martin Grohman
  • Composite products comprising cellulosic materials and synthetic resins and methods of making the same
    Patent number: 6586503
    Abstract: New wood-synthetic resin composite products and methods of forming these products are provided. The products comprise a cellulosic or fibrous material and polypropylene (preferably reactor flake polypropylene). The products are formed by passing ingredients including the fibrous material and polypropylene through an extruder (preferably a twin screw extruder) at temperatures of from about 150-260° C. The extruded composite products have physical properties very similar to those of natural wood, including high tensile strengths, high compressive strengths, and high densities.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: July 1, 2003
    Assignee: Correct Building Products, L.L.C.
    Inventor: Martin Grohman