Patents by Inventor Walter A. Laska

Walter A. Laska 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).

  • Masonry insulated board with integral drainage
    Patent number: 5860259
    Abstract: An insulated drainage panel for use in cavity wall or veneer wall construction. The insulated panel includes a generally planar insulating board; and a porous structure disposed on one side of the board.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: January 19, 1999
    Inventor: Walter A. Laska
  • Masonry end dam
    Patent number: 5815986
    Abstract: An end dam for a masonry wall comprising three orthogonal rectilinear planar structures each joined, at a common corner and two adjacent sides, and an adhesive disposed along an outer surface of at least one of the three planar structures. The end dam being used along either end of a flashing lying along the outer surface of a lintel within an opening in a wall structure so as to allow for continuous drainage of moisture flowing downward within a drainage space of the wall structure.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: October 6, 1998
    Inventor: Walter A. Laska
  • Corner flashing membrane
    Patent number: 4700512
    Abstract: A flexible, one-piece membrane is provided for inside or outside corners at building foundations, shelf angles, and roofs. The membrane includes a central vertical section that wraps around the corner, a top planar section that extends rearwardly into the corner, and a bottom planar section that extends forwardly upon the building foundation, shelf angle, or roof. The membrane is preferably made of plastic film, for example polyvinylchloride, and is particularly suited for use in masonry construction.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: October 20, 1987
    Inventor: Walter A. Laska