Patents by Inventor Timothy A. Durning

Timothy A. Durning 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).

  • Avoiding cracking and curling in concrete flooring upon which water-based adhesives are employed
    Patent number: 7219479
    Abstract: The invention provides a method for making a concrete floor slab using sub-grade waterproofing in a manner that favors the use of water-based adhesives for affixing floor covering materials. The method comprises casting a hydratable cementitious composition onto a flooring membrane, the composition having a shrinkage reduction admixture and a water:cementitious binder ratio sufficiently low that substantially all of the water moisture is retained in the hydration reaction, and achieving a fully adhered bond with the flooring membrane.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: May 22, 2007
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Timothy A. Durning, Lawrence R. Roberts, Neal S. Berke
  • Avoiding cracking and curling in concrete flooring upon which water-based adhesives are employed
    Publication number: 20050183387
    Abstract: The invention provides a method for making a concrete floor slab using sub-grade waterproofing in a manner that favors the use of water-based adhesives for affixing floor covering materials. The method comprises casting a hydratable cementitious composition onto a flooring membrane, the composition having a shrinkage reduction admixture and a water:cementitious binder ratio sufficiently low that substantially all of the water moisture is retained in the hydration reaction, and achieving a fully adhered bond with the flooring membrane.
    Type: Application
    Filed: March 31, 2005
    Publication date: August 25, 2005
    Inventors: Timothy Durning, Lawrence Roberts, Neal Berke
  • Avoiding cracking and curling in concrete flooring upon which water-based adhesives are employed
    Patent number: 6898917
    Abstract: The invention provides a method for making a concrete floor slab using sub-grade waterproofing in a manner that favors the use of water-based adhesives for affixing floor covering materials. The method comprises casting a hydratable cementitious composition onto a flooring membrane, the composition having a shrinkage reduction admixture and a water:cementitious binder ratio sufficiently low that substantially all of the water moisture is retained in the hydration reaction, and achieving a fully adhered bond with the flooring membrane.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: May 31, 2005
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Timothy A. Durning, Lawrence R. Roberts, Neal S. Berke
  • Avoiding cracking and curling in concrete flooring upon which water-based adhesives are employed
    Publication number: 20040031223
    Abstract: The invention provides a method for making a concrete floor slab using subgrade waterproofing in a manner that favors the use of water-based adhesives for affixing floor covering materials. The method comprises casting a hydratable cementitious composition onto a flooring membrane, the composition having a shrinkage reduction admixture and a water:cementitious binder ratio sufficiently low that substantially all of the water moisture is retained in the hydration reaction, and achieving a fully adhered bond with the flooring membrane.
    Type: Application
    Filed: August 15, 2002
    Publication date: February 19, 2004
    Inventors: Timothy A. Durning, Lawrence R. Roberts, Neal S. Berke