Patents by Inventor Alexander Joseph Zaddach

Alexander Joseph Zaddach 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).

  • Electrodes for forming austenitic and duplex steel weld metal
    Patent number: 10799974
    Abstract: The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises chromium. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises chromium (Cr) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, manganese (Mn) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, nickel (Ni) at a concentration between zero and about 5 weight % on the basis of the total weight of the welding wire, and carbon (C) at a concentration greater than zero weight %, wherein concentrations of Ni, C and Mn are such that [Ni]+30[C]+0.5[Mn] is less than about 12 weight %, wherein [Ni], [C], and [Mn] represent weight percentages of respective elements on the basis of the total weight of the welding wire.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: October 13, 2020
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Alexander Joseph Zaddach, Badri K. Narayanan
  • ELECTRODES FOR FORMING AUSTENITIC AND DUPLEX STEEL WELD METAL
    Publication number: 20190054559
    Abstract: The disclosed technology generally relates to consumable electrode wires and more particularly to consumable electrode wires having a core-shell structure, where the core comprises chromium. In one aspect, a welding wire comprises a sheath having a steel composition and a core surrounded by the sheath. The core comprises chromium (Cr) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, manganese (Mn) at a concentration between about 12 weight % and about 18 weight % on the basis of the total weight of the welding wire, nickel (Ni) at a concentration between zero and about 5 weight % on the basis of the total weight of the welding wire, and carbon (C) at a concentration greater than zero weight %, wherein concentrations of Ni, C and Mn are such that [Ni]+30[C]+0.5[Mn] is less than about 12 weight %, wherein [Ni], [C], and [Mn] represent weight percentages of respective elements on the basis of the total weight of the welding wire.
    Type: Application
    Filed: August 16, 2017
    Publication date: February 21, 2019
    Inventors: Alexander Joseph Zaddach, Badri K. Narayanan