Patents by Inventor Mary J. Hornung

Mary J. Hornung 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).

  • Gray cast iron inoculant
    Patent number: 4749549
    Abstract: A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% strontium, less than 0.35% calcium and either 0.1 to 15% zirconium, 0.1 to 20% titanium or a mixture of both zirconium and titanium with the strontium. The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.
    Type: Grant
    Filed: January 2, 1987
    Date of Patent: June 7, 1988
    Assignee: Elkem Metals Company
    Inventors: Mary J. Hornung, Edward C. Sauer
  • Gray cast iron inoculant
    Patent number: 4666516
    Abstract: A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% strontium, less than 0.35% calcium and either 0.1 to 15% zirconium, 0.1 to 20% titanium or a mixture of both zirconium and titanium with the strontium. The inoculant, method for producing the inoculant, method for inoculating the melt and a gray cast iron inoculated with the inoculant are covered.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: May 19, 1987
    Assignee: Elkem Metals Company
    Inventors: Mary J. Hornung, Edward C. Sauer