Patents by Inventor Thomas A. Sperakis

Thomas A. Sperakis 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).

  • Method of brazing carbide using copper-zinc-manganese-nickel alloys
    Patent number: 4684052
    Abstract: Copper-zinc-manganese-nickel alloys comprising 30 to 70 weight percent copper, 15 to 45 weight percent zinc, 5 to 20 weight percent manganese, 1 to 20 weight percent nickel, 0.05 to 2 weight percent silicon and less than about 0.05 weight percent of other elements. Also, use of this alloy as a brazing material and a method for brazing carbide compounds to a suitable substrate utilizing such brazing materials.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: August 4, 1987
    Assignee: Handy & Harman
    Inventors: Allen S. McDonald, Charles W. Philp, Thomas A. Sperakis
  • Copper-zinc-manganese-nickel alloys
    Patent number: 4631171
    Abstract: Copper-zinc-manganese-nickel alloys comprising 30 to 70 weight percent copper, 15 to 45 weight percent zinc, 5 to 20 weight percent manganese, 1 to 20 weight percent nickel, 0.05 to 2 weight percent silicon and less than about 0.05 weight percent of other elements. Also, use of this alloy as a brazing material and a method for brazing carbide compounds to a suitable substrate utilizing such brazing materials.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: December 23, 1986
    Assignee: Handy & Harman
    Inventors: Allen S. McDonald, Charles W. Philp, Thomas A. Sperakis