Patents by Inventor Nancy C. Varnum

Nancy C. Varnum 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).

  • Process for preparing sand cores and molds
    Patent number: 4484616
    Abstract: An improved process for preparing foundry cores and molds using a foundry aggregate and a binder therefor wherein the aggregate is mixed with an aqueous suspension of cereal flour and then with a core oil, the improvement comprising mixing the aggregate with phosphoric acid or sulfuric acid before mixing with the aqueous suspension of the cereal flour.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: November 27, 1984
    Assignee: International Minerals & Chemical Corp.
    Inventors: Nancy C. Varnum, John F. Kraemer
  • Oxidatively coupled cold-set binders
    Patent number: 4421873
    Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: December 20, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Nancy C. Varnum
  • Oxidatively coupled cold-set binders
    Patent number: 4393152
    Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: July 12, 1983
    Assignee: International Minerals & Chemicals Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Nancy C. Varnum
  • Oxidatively coupled cold-set binders
    Patent number: 4389498
    Abstract: A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: June 21, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Charles E. Seeney, John F. Kraemer, Nancy C. Varnum