Patents by Inventor Stephen James Donachie

Stephen James Donachie 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).

  • Ferritic alloys of low flow stress for P/M forgings
    Patent number: 4049429
    Abstract: Ferritic age-hardenable alloy steels containing correlated percentages of nickel, copper, molybdenum, carbon, etc. in powder form are characterized by low flow stress, thus rendering them particularly suitable for P/M hot forging.
    Type: Grant
    Filed: March 7, 1974
    Date of Patent: September 20, 1977
    Assignee: The International Nickel Company, Inc.
    Inventor: Stephen James Donachie
  • Air hardenable, formable steel
    Patent number: 3944442
    Abstract: A process for producing a highly formable steel capable of affording yield strengths upwards of 90,000 psi through air hardening and without need of liquid quenching, the steel preferably contains correlated percentages of chromium and nickel among other elements and should be in the martensitic condition prior to the first heat treating step.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: March 16, 1976
    Assignee: The International Nickel Company, Inc.
    Inventor: Stephen James Donachie