Patents by Inventor Thomas J. Margaria

Thomas J. Margaria 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).

  • Inoculation filter
    Patent number: 6793707
    Abstract: A method for inoculating molten iron. The method comprises passing the molten iron through a filter assembly at an approach velocity of about 1 to about 60 cm/sec. The filter assembly comprises a filter element and an inoculation pellet in contact with the filter element. The pellet has an inoculant dissolution rate of at least 1 mg/sec. to no more than 320 mg/sec. and comprises about 40-99.9%, by weight, carrier comprising ferrosilicon. The pellet further comprises about 0.1-60%, by weight, at least one inoculating agent selected from a group consisting of cerium, strontium, zirconium, calcium, manganese, barium, bismuth, magnesium, titanium and aluminum or from rare earths.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 21, 2004
    Assignees: Pechiney Electrometallurgie, Porvair PLC
    Inventors: Donald B. Craig, Leonard S. Aubrey, Thomas J. Margaria
  • Inoculant pellet for late inoculation of cast iron
    Patent number: 6613119
    Abstract: A pellet, intended for the late inoculation of cast irons, obtained by agglomeration of a powdered inoculant, characterised in that the mass proportion of the granulometric fraction 50-250 microns of the powdered inoculant of which the pellet is constituted is comprised between 35 and 60%, and the mass proportion of the granulometric fraction below 50 microns is lower than 25%.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 2, 2003
    Assignee: Pechiney Electrometallurgie
    Inventor: Thomas J. Margaria
  • Inoculation filter
    Publication number: 20030126946
    Abstract: A method for inoculating molten iron. The method comprises passing the molten iron through a filter assembly at an approach velocity of about 1 to about 60 cm/sec. The filter assembly comprises a filter element and an inoculation pellet in contact with the filter element. The pellet has an inoculant dissolution rate of at least 1 mg/sec. to no more than 320 mg/sec. and comprises about 40-99.9%, by weight, carrier comprising ferrosilicon. The pellet further comprises about 0.1-60%, by weight, at least one inoculating agent selected from a group consisting of cerium, strontium, zirconium, calcium, manganese, barium, bismuth, magnesium, titanium and aluminum or from rare earths.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 10, 2003
    Inventors: Donald B. Craig, Leonard S. Aubrey, Thomas J. Margaria
  • INOCULANT PELLET FOR LATE INOCULATION OF CAST IRON
    Publication number: 20030126947
    Abstract: A pellet, intended for the late inoculation of cast irons, obtained by agglomeration of a powdered inoculant, characterised in that the mass proportion of the granulometric fraction 50-250 microns of the powdered inoculant of which the pellet is constituted is comprised between 35 and 60%, and the mass proportion of the granulometric fraction below 50 microns is lower than 25%.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 10, 2003
    Inventor: Thomas J. Margaria