Patents by Inventor Esra Cankaya-Yalcin

Esra Cankaya-Yalcin 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).

  • Production of copper via looping oxidation process
    Patent number: 9725784
    Abstract: Copper is produced by a looping oxidizing process wherein oxidation of copper sulfide concentrate to molten blister copper by conversion with copper oxides (and optionally oxygen from air) in a one step, molten bath operation to produce molten blister copper, iron oxide slag, and rich SO2 off gas. The blister copper is treated in an anode furnace to reduce the iron content and oxidize residual sulfur, and prepare it for either electrolysis or reoxidation.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: August 8, 2017
    Inventors: Lawrence F. McHugh, Leonid N Shekhter, Joseph D. Lessard, Daniel G. Gribbin, Esra Cankaya-Yalcin
  • Sulfide oxidation process for production of molybdenum oxides from molybdenite
    Patent number: 9187340
    Abstract: A looping method for production of MoO2, the method including reacting molybdenite feed with a substantially stoichiometric mixture comprising MoO3 and oxygen in a first furnace to produce MoO2 and SO2, removing a first portion of the MoO2 from the first furnace, transferring a second portion of the MoO2 from the first furnace to a second furnace, reoxidizing of the transferred portion of the MoO2 in the second furnace to MoO3; and looping the MoO3 from the second furnace to the first furnace for use as an oxidizing agent.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: November 17, 2015
    Assignee: ORCHARD MATERIAL TECHNOLOGY
    Inventors: Larry F. McHugh, Leonid N. Shekhter, Joseph D. Lessard, Daniel G. Gribbin, Esra Cankaya-Yalcin
  • SULFIDE OXIDATION PROCESS FOR PRODUCTION OF MOLYBDENUM OXIDES FROM MOLYBDENITE
    Publication number: 20140161715
    Abstract: A looping method for production of MoO2, the method including reacting molybdenite feed with a substantially stoichiometric mixture comprising MoO3 and oxygen in a first furnace to produce MoO2 and SO2, removing a first portion of the MoO2 from the first furnace, transferring a second portion of the MoO2 from the first furnace to a second furnace, reoxidizing of the transferred portion of the MoO2 in the second furnace to MoO3; and looping the MoO3 from the second furnace to the first furnace for use as an oxidizing agent.
    Type: Application
    Filed: July 19, 2013
    Publication date: June 12, 2014
    Inventors: Larry F. McHugh, Leonid N. Shekhter, Joseph D. Lessard, Daniel G. Gribbin, Esra Cankaya-Yalcin
  • PRODUCTION OF COPPER VIA LOOPING OXIDATION PROCESS
    Publication number: 20130340568
    Abstract: Copper is produced by a looping oxidizing process wherein oxidation of copper sulfide concentrate to molten blister copper by conversion with copper oxides (and optionally oxygen from air) in a one step, molten bath operation to produce molten blister copper, iron oxide slag, and rich SO2 off gas. The blister copper is treated in an anode furnace to reduce the iron content and oxidize residual sulfur, and prepare it for either electrolysis or reoxidation.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 26, 2013
    Applicant: ORCHARD MATERIAL TECHNOLOGY
    Inventors: Lawrence F. McHugh, Leonid N. Shekhter, Joseph D. Lessard, Daniel G. Gribbin, Esra Cankaya-Yalcin