Patents by Inventor Ruth A. Bambauer

Ruth A. Bambauer 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).

  • Inorganic foundry binder systems and their uses
    Patent number: 5582232
    Abstract: This invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate components: (A) mono-aluminum phosphate in an aqueous solution containing specified phosphoric acids, and (B) magnesium oxide; and certain specified zinc compounds in either the Component A, Component B or both. The components of the binder system react when they are mixed with a foundry aggregate to prepare foundry mixes which are used to prepare foundry molds and cores. The foundry molds and cores are used to cast metals.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: December 10, 1996
    Assignee: Ashland Inc.
    Inventors: Ruth A. Bambauer, Heimo J. Langer, Steven C. Akey
  • Inorganic foundry binder systems and their uses
    Patent number: 5382289
    Abstract: This invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate components: (A) mono-aluminum phosphate in an aqueous solution containing specified phosphoric acids, and (B) magnesium oxide; and certain specified zinc compounds in either the Component A, Component B or both. The components of the binder system react when they are mixed with a foundry aggregate to prepare foundry mixes which are used to prepare foundry molds and cores. The foundry molds and cores are used to cast metals.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: January 17, 1995
    Assignee: Ashland Oil, Inc.
    Inventors: Ruth A. Bambauer, Heimo J. Langer, Steven C. Akey