Patents by Inventor Mark A. Tarhay

Mark A. Tarhay 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: 8813342
    Abstract: A method for producing a single-clad or multiple-clad product includes providing a welded assembly comprising a cladding material disposed on a substrate material. Both the substrate material and the cladding material are individually selected alloys. At least a first edge of the cladding material of the welded assembly does not extend to a first edge of the substrate material and thereby provides a margin between the first edges. A material that is an alloy having hot strength greater than the cladding material is within the margin and adjacent the first edge of the cladding material. The welded assembly is hot rolled to provide a hot rolled band, and the material within the margin inhibits the cladding material from spreading beyond the edge of the substrate material during the hot rolling. In certain embodiments of the methods, the substrate material is stainless steel and the cladding material is nickel or a nickel alloy.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: August 26, 2014
    Assignee: ATI Properties, Inc.
    Inventors: David S. Bergstrom, Kris J. Schott, Mark A. Tarhay
  • Patent number: 8387228
    Abstract: A method for producing a single-clad or multiple-clad product includes providing a welded assembly comprising a cladding material disposed on a substrate material. Both the substrate material and the cladding material are individually selected alloys. At least a first edge of the cladding material of the welded assembly does not extend to a first edge of the substrate material and thereby provides a margin between the first edges. A material that is an alloy having hot strength greater than the cladding material is within the margin and adjacent the first edge of the cladding material. The welded assembly is hot rolled to provide a hot rolled band, and the material within the margin inhibits the cladding material from spreading beyond the edge of the substrate material during the hot rolling. In certain embodiments of the methods, the substrate material is stainless steel and the cladding material is nickel or a nickel alloy.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: March 5, 2013
    Assignee: ATI Properties, Inc.
    Inventors: David S. Bergstrom, Kris J. Schott, Mark A. Tarhay
  • Publication number: 20050273994
    Abstract: A method for producing a single-clad or multiple-clad product includes providing a welded assembly comprising a cladding material disposed on a substrate material. Both the substrate material and the cladding material are individually selected alloys. At least a first edge of the cladding material of the welded assembly does not extend to a first edge of the substrate material and thereby provides a margin between the first edges. A material that is an alloy having hot strength greater than the cladding material is within the margin and adjacent the first edge of the cladding material. The welded assembly is hot rolled to provide a hot rolled band, and the material within the margin inhibits the cladding material from spreading beyond the edge of the substrate material during the hot rolling. In certain embodiments of the methods, the substrate material is stainless steel and the cladding material is nickel or a nickel alloy.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 15, 2005
    Inventors: David Bergstrom, Kris Schott, Mark Tarhay
  • Patent number: 4891489
    Abstract: A shield cup protector apparatus for protecting a ceramic shield cup of a plasma arc torch from breakage during operation thereof. The shield cup protector apparatus is comprised of an elongated cylinder having first and second open ends. A first open end of the elongated cylinder is positioned to abut a peripheral portion of the shield cup, allowing the shield cup to extend into an inner cavity formed by the cylinder, thereby allowing the shield cup to support the cylinder therefrom, while also allowing the elongated cylinder to surround the exposed surfaces of the shield cup to protect the shield cup thereby.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: January 2, 1990
    Assignee: Allegheny Ludlum Corporation
    Inventors: Lawrence A. Bollinger, Mark A. Tarhay