Patents by Inventor Michael Massoud Hojjatie

Michael Massoud Hojjatie 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).

  • Process for conversion of waste fluid streams from chemical processing plants to beneficiary agriculture products
    Patent number: 7897133
    Abstract: The present invention is directed to the conversion of gas streams comprising ammonia, hydrogen sulfide, and water in the form of liquids or gases that are generated by petroleum refineries and coke ovens to beneficiary agriculture products, by forming ammonium sulfide and then converting the ammonium sulfide, using sulfuric acid, to pure ammonium sulfate.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: March 1, 2011
    Assignee: Tessenderlo Kerley, Inc.
    Inventors: Michael Massoud Hojjatie, Anatoly Pustilnik, Harry Charles Kominski
  • Calcium polysulfide, potassium polysulfide, calcium thiosulfate, and magnesium thiosulfate as urease inhibitors
    Patent number: 7494525
    Abstract: Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: February 24, 2009
    Assignee: Tessenderlo Kerley, Inc.
    Inventors: Michael Massoud Hojjatie, John Garland Clapp, Thomas David Fairweather, Constance Lynn Frank Lockhart
  • Magnesium thiosulfate solution and process for preparing same
    Patent number: 6921523
    Abstract: An efficient process for the preparation of magnesium thiosulfate involves reaction of magnesium hydrosulfite and sulfur at elevated temperature. Magnesium hydrosulfite can be prepared from commercial magnesium oxide and sulfur. Sulfur dioxide can be used to maintain pH. The resulting product is an emulsion of liquid magnesium thiosulfate and solid byproducts. Under controlled conditions, including mole ratios of MgO to sulfur, temperature of the reaction process, and pH, as well as rate and duration of SO2 purging, production of byproducts can be reduced to less than about 2% by weight. The magnesium thiosulfate solution can be prepared with concentrations of at least about 25%, preferably at least about 30%.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: July 26, 2005
    Assignee: Tessenderlo Kerley, Inc.
    Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart