Patents by Inventor Glenn O. Ratliff

Glenn O. Ratliff 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).

  • Water-based shielding compositions for locally protecting metal surfaces during heat treatment thereof
    Patent number: 5270374
    Abstract: An anti-nitriding composition comprising a water-based alkyd resin having suspended therein particulate tin and titanium dioxide; a thixotropic agent maintains the particulates in suspension during storage and application; the composition includes surfactant and co-solvent to impart paint-like characteristics. The composition is suitable for use as a local shield during the heat treatment of metals to prevent nitriding or ferritic nitro-carburization at temperatures in the range of about 850.degree. F. to about 1150.degree. F. The water-based formulation is safe to use and to transport, and has an air drying time at normal working temperatures comparable to those drying times previously achievable only with organic-solvent based anti-nitriding compositions.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: December 14, 1993
    Inventor: Glenn O. Ratliff
  • Water-based shielding compositions for locally protecting metal surfaces during heat treatment thereof
    Patent number: 5110854
    Abstract: An anti-nitriding composition comprising a water-based alkyd resin having suspended therein particulate tin and titanium dioxide; a thixotropic agent maintains the particulates in suspension during storage and application; the composition includes surfactant and co-solvent to impart paint-like characteristics. The composition is suitable for use as a local shield during the heat treatment of metals to prevent nitriding or ferritic nitro-carburization at temperatures in the range of about 850.degree. F. to about 1150.degree. F. The water-based formulation is safe to use and to transport, and has an air drying time at normal working temperatures comparable to those drying times previously achievable only with organic-solvent based anti-nitriding compositions.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: May 5, 1992
    Inventor: Glenn O. Ratliff