Patents by Inventor Warren Lehan

Warren Lehan 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).

  • Apparatus for manufacture of improved structural panel
    Patent number: 6638393
    Abstract: The present invention comprises apparatus for the manufacture improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within the core of the structural panel and adhesives and smooth materials (such as foil) as a surface coating. The apparatus is particularly suited for manufacture of the structural panel at low cost and high efficiency.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: October 28, 2003
    Assignee: Enviro-Ply International, Inc.
    Inventor: Warren Lehan
  • Method for manufacture of improved structural panel
    Patent number: 6596214
    Abstract: The present invention comprises a method for the manufacture improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within the core of the structural panel and adhesives and smooth materials (such as foil) as a surface coating. The method is particularly suited for manufacture of the structural panel at low cost and high efficiency.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Enviro-Ply International, Inc.
    Inventor: Warren Lehan
  • Method for manufacture of improved structural panel
    Publication number: 20020104282
    Abstract: The present invention comprises a method for the manufacture improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within the core of the structural panel and adhesives and smooth materials (such as foil) as a surface coating. The method is particularly suited for manufacture of the structural panel at low cost and high efficiency.
    Type: Application
    Filed: November 9, 2001
    Publication date: August 8, 2002
    Inventor: Warren Lehan
  • Apparatus for manufacture of improved structural panel
    Publication number: 20020104601
    Abstract: The present invention comprises apparatus for the manufacture improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within the core of the structural panel and adhesives and smooth materials (such as foil) as a surface coating. The apparatus is particularly suited for manufacture of the structural panel at low cost and high efficiency.
    Type: Application
    Filed: November 9, 2001
    Publication date: August 8, 2002
    Inventor: Warren Lehan
  • Synthetic structural panel and method for manufacture
    Patent number: 6316087
    Abstract: The present invention comprises an improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within the core of the structural panel and adhesives and smooth materials (such as foil) as a surface coating. The invention further describes a method and apparatus for assembling such a structural panel.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: November 13, 2001
    Inventor: Warren Lehan
  • Structural panel incorporating clay grog and vermiculite and method for making said panel
    Patent number: 4868039
    Abstract: The present invention describes an improved composition for structural panel which incorporates Portland cement, clay, grog, and vermiculite. Also described is the method for combining the ingredients to manufacture the improved structural panel.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: September 19, 1989
    Inventor: Warren A. Lehan