Patents by Inventor Dominic A. Sorace

Dominic A. Sorace 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).

  • Corrosion resistant austenitic stainless steel
    Patent number: 6036917
    Abstract: An alloy having a composition, by weight, of about 0.025% or less carbon, about 0.5 to about 4.1% manganese, about 5.5 to about 6.2% silicon, about 11 to about 15% chromium, about 9.0 to about 15.5% nickel, about 0.8 to about 1.2% molybdenum and about 0.8 to about 2% copper and the remainder being essentially iron with incidental impurities. This composition results in lean alloy content in a high silicon austenitic stainless steel for concentrated sulfuric acid service while maintaining a corrosion rate similar to and competitive with existing alloys for such service. Acceptable characteristics were found when hot working was carried out in the range of about 2100.degree. F. to about 2200.degree. F. Annealing in the range of about 1925.degree. F. to about 2025.degree. F. is preferred, as is rapid water quenching after annealing.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 14, 2000
    Assignee: Allegheny Ludlum Corporation
    Inventors: Dominic A. Sorace, John F. Grubb
  • Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformation
    Patent number: 5588321
    Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: December 31, 1996
    Assignee: Allegheny Ludlum Corporation
    Inventors: Ralph E. Snyder, Dominic A. Sorace, James G. Benford
  • Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformation
    Patent number: 5463889
    Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: November 7, 1995
    Assignee: Allegheny Ludlum Corporation
    Inventors: Ralph E. Snyder, Dominic A. Sorace, James G. Benford
  • Low nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steel
    Patent number: 5286310
    Abstract: An low-nickel austenitic stainless alloy containing about 16.5 to about 17.5% by weight chromium; about 6.4 to about 8.0% by weight manganese; about 2.5 to about 5.0% by weight nickel; about 2.0 to less than about 3.0% by weight copper; less than about 0.15% by weight carbon; less than about 0.2% by weight nitrogen; less than about 1% by weight silicon; and the balance essentially iron with incidental impurities.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 15, 1994
    Assignee: Allegheny Ludlum Corporation
    Inventors: Gary M. Carinci, Ivan A. Franson, Dominic A. Sorace, John P. Ziemianski