Patents by Inventor Gary R. Hysell

Gary R. Hysell 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).

  • Ester cured no-bake foundry binder system
    Patent number: 5424376
    Abstract: The invention relates to an ester cured no-bake foundry binder system preferably comprising as separate components (a) an aqueous basic solution of a phenolic resole resin; and (b) a hardener comprising (i) a polyphenol resin, and (ii) a liquid ester. Alternatively, the polyphenol resin can be used as a separate component. The foundry binder systems produce foundry shapes with improved tensile strengths when compared to foundry shapes which are prepared from foundry binder systems which do not contain a polyphenol resin.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: June 13, 1995
    Assignee: Ashland Inc.
    Inventors: Ken K. Chang, William R. Dunnavant, Robert B. Fechter, Gary R. Hysell
  • Ester cured no-bake foundry binder systems
    Patent number: 5405881
    Abstract: The invention relates to an ester cured no-bake foundry binder system preferably comprising as separate components (a) an aqueous basic solution of a phenolic resole resin; (b) a hardener comprising (i) an epoxy resin, and (ii) a liquid ester.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: April 11, 1995
    Assignee: Ashland Oil, Inc.
    Inventors: James T. Schneider, Gary R. Hysell
  • Foundry mixes based upon reclaimed sand
    Patent number: 5376696
    Abstract: The subject invention relates to foundry mixes comprised of (a) an aqueous basic solution of a phenolic resole resin; (b) a major amount of reclaimed sand which has first been treated with an aqueous non halogenated surfactant solution, and (c) a liquid ester co-reactant.The invention also relates to foundry shapes made with the subject foundry mixes which have improved tensile strengths and scratch hardness when compared to foundry shapes which are prepared from foundry binder systems which do not utilize foundry aggregates which have been mixed with an aqueous surfactant solution.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: December 27, 1994
    Assignee: Ashland Oil, Inc.
    Inventors: William R. Dunnavant, Kenneth W. Barnett, Gary R. Hysell
  • Modifiers for aqueous basic solutions of phenolic resole resins
    Patent number: 4780489
    Abstract: The subject invention relates to modifiers for aqueous basic solutions of phenolic resins. The modifiers are open-chain ether alcohols or ketone alcohols. They assist in stabilizing the aqueous basic solutions of phenolic resole resins and improve the tensile strength of foundry shapes prepared from foundry mixes made with the aqueous basic solutions.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: October 25, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: William R. Dunnavant, Robert B. Fechter, Gary R. Hysell, Young D. Kim, Heimo J. Langer