Patents by Inventor Charles W. Griffen

Charles W. Griffen 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).

  • Patent number: 4825939
    Abstract: A polymeric composition comprising a polymeric material and polyethylene glycol or end-capped polyethylene glycol as a phase change material, said polyethylene glycol and said end-capped polyethylene glycol having a molecular weight greater than about 400 and a heat of fusion greater than about 30 cal/g; the composition is useful in making molded and/or coated materials such as flooring, tiles, wall panels and the like; paints containing polyethylene glycols or end-capped polyethylene glycols are also disclosed.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: May 2, 1989
    Assignee: The University of Dayton
    Inventors: Ival O. Salyer, Charles W. Griffen
  • Patent number: 4617332
    Abstract: Compositions containing crystalline, long chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: October 14, 1986
    Assignee: University of Dayton
    Inventors: Ival O. Salyer, Charles W. Griffen
  • Patent number: 4588510
    Abstract: An aqueous solution useful in extinguishing fires is disclosed comprising diammonium phosphate, a water soluble polyol, a water soluble gas-generating agent, a non-combustible viscosity builder and water; when sprayed upon burning surfaces, the solution intumesces and generates a flame-resistant polymeric foam having a high char value; the foam shuts off the air supply to the burning surface and thereby quickly and effectively extinguishes the fire.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: May 13, 1986
    Assignee: University of Dayton
    Inventors: Ival O. Salyer, Charles W. Griffen, Donovan S. Duvall
  • Patent number: 4587279
    Abstract: A cementitious composition comprising a cementitious material and polyethylene glycol or end-capped polyethylene glycol as a phase change material, said polyethylene glycol and said end-capped polyethylene glycol having a molecular weight greater than about 400 and a heat of fusion greater than about 30 cal/g; the compositions are useful in making pre-formed building materials such as concrete blocks, brick, dry wall and the like or in making poured structures such as walls or floor pads; the glycols can be encapsulated to reduce their tendency to retard set.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: May 6, 1986
    Assignee: University of Dayton
    Inventors: Ival O. Salyer, Charles W. Griffen