Patents by Inventor Gerald R. Zebrowski

Gerald R. Zebrowski 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).

  • Reclaimed magnesium desulfurization agent
    Patent number: 6989040
    Abstract: A method and composition for removing sulfur from molten ferrous material, particularly molten iron. The desulfurization agent includes reclaimed magnesium scrap, a gas-producing compound and a calcium compound.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 24, 2006
    Inventor: Gerald R. Zebrowski
  • Reclaimed magnesium desulfurization agent
    Publication number: 20040083851
    Abstract: A method and composition for removing sulfur from molten ferrous material, particularly molten iron. The desulfurization agent includes reclaimed magnesium scrap, a gas-producing compound and a calcium compound.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Rossborough Manufacturing Company, a Delaware Corporation
    Inventor: Gerald R. Zebrowski
  • Magnesium desulfurization agent
    Patent number: 6383249
    Abstract: A method and composition for removing sulfur from molten ferrous material, particularly molten pig iron. The desulfurization agent includes a magnesium particle coated with a heat absorbing compound. The heat absorbing compound absorbs heat around the magnesium particle to reduce the rate the magnesium particle vaporizes in the molten iron. The particle size of the magnesium particle is at least about twice the particle size of the heat absorbing compound. A bonding agent can be used to bond the particles of the heat absorbing compound to the particle of magnesium.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: May 7, 2002
    Assignee: Rossborough Manufacturing Co. LP
    Inventors: Thomas H. Bieniosek, Gerald R. Zebrowski
  • Magnesium desulfurization agent
    Patent number: 6352570
    Abstract: A method and composition for removing sulfur from molten ferrous material, particularly molten pig iron. The desulfurization agent includes a magnesium particle coated with a heat absorbing compound. The heat absorbing compound absorbs heat around the magnesium particle to reduce the rate the magnesium particle vaporizes in the molten iron. The particle size of the magnesium particle is at least about twice the particle size of the heat absorbing compound. A bonding agent can be used to bond the particles of the heat absorbing compound to the particle of magnesium.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: March 5, 2002
    Assignee: Rossborough Manufacturing Co., LP
    Inventors: Thomas H. Bieniosek, Gerald R. Zebrowski
  • Magnesium desulfurization agent
    Publication number: 20010029809
    Abstract: A method and composition for removing sulfur from molten ferrous material, particularly molten pig iron. The desulfurization agent includes a magnesium particle coated with a heat absorbing compound. The heat absorbing compound absorbs heat around the magnesium particle to reduce the rate the magnesium particle vaporizes in the molten iron. The particle size of the magnesium particle is at least about twice the particle size of the heat absorbing compound. A bonding agent can be used to bond the particles of the heat absorbing compound to the particle of magnesium.
    Type: Application
    Filed: June 11, 2001
    Publication date: October 18, 2001
    Applicant: Rossborough Manufacturing Co., L.P., Delaware Limited Partnership
    Inventors: Thomas H. Bieniosek, Gerald R. Zebrowski
  • Insulating hot topping material
    Patent number: 4221595
    Abstract: An insulating hot topping material including a refractory filler material, an optional light weight insulating filler material and a finely divided particulate carbonaceous material. Dust inhibitors may also be included in the form of a liquid hydrocarbon and/or a fiber material.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: September 9, 1980
    Assignee: Ferro Corporation
    Inventor: Gerald R. Zebrowski