Patents by Inventor Stephen Erwin Lyke

Stephen Erwin Lyke 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).

  • Patent number: 8372179
    Abstract: The present invention is one or more processes for producing separable iron and titanium oxides from an ore comprising titanium oxide and iron oxide, comprising: (a) forming agglomerates comprising carbon-based material and the ore, the quantity of carbon of the agglomerates being at least sufficient for forming a ferrous oxide-containing molten slag, at an elevated temperature; (b) introducing the agglomerates onto a bed of carbon-based material in a moving hearth furnace, wherein the carbon-based materials used for both the agglomerates and the bed have a low sulfur content; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for liquefying the agglomerates to produce a liquid comprising ferrous oxide-containing slag; (d) metallizing the ferrous oxide of the slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a liquid state; (e) solidifying the slag after metallization of the ferrous oxide to
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: February 12, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Joseph M. Shekiro, Jr., Guangliang Liu
  • Publication number: 20100285326
    Abstract: The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a ferrous oxide-rich molten slag, (b) introducing the agglomerates onto a carbon bed of a moving hearth furnace; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a ferrous oxide-rich molten slag; (d) metallizing the ferrous oxide of the molten slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a molten state; and (e) solidifying the slag after metallization of the ferrous oxide to form a matrix of titanium oxide-rich slag having a plurality of metallic iron granules distri
    Type: Application
    Filed: July 19, 2010
    Publication date: November 11, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: JOHN JAMES BARNES, Stephen Erwin Lyke, Dat Nguyen, Mitsutaka Hino, Akira Uragami, Isao Kobayashi, Thomas Peter Battle, Joseph M. Shekiro, JR.
  • Publication number: 20100237280
    Abstract: The disclosure is directed to a process for producing separable iron and titanium oxides from an ore comprising titanium oxide and iron oxide, comprising: (a) forming agglomerates comprising carbon-based material and the ore, the quantity of carbon of the agglomerates being at least sufficient for forming a ferrous oxide-containing molten slag, at an elevated temperature; (b) introducing the agglomerates onto a bed of carbon-based material in a moving hearth furnace, wherein the carbon-based materials used for both the agglomerates and the bed have a low sulfur content; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for liquefying the agglomerates to produce a liquid comprising ferrous oxide-containing slag; (d) metallizing the ferrous oxide of the slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a liquid state; (e) solidifying the slag after metallization of the ferrous oxide to form a
    Type: Application
    Filed: October 14, 2008
    Publication date: September 23, 2010
    Inventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Joseph M. Shekiro, JR., Guangliang Liu
  • Patent number: 7780756
    Abstract: The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a ferrous oxide-rich molten slag, (b) introducing the agglomerates onto a carbon bed of a moving hearth furnace; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a ferrous oxide-rich molten slag; (d) metallizing the ferrous oxide of the molten slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a molten state; and (e) solidifying the slag after metallization of the ferrous oxide to form a matrix of titanium oxide-rich slag having a plurality of metallic iron granules distri
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: August 24, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Akira Uragami, Isao Kobayashi, Mitsutaka Hino, Thomas Peter Battle, Joseph M. Shekiro, Jr.
  • Publication number: 20090217784
    Abstract: The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a ferrous oxide-rich molten slag, (b) introducing the agglomerates onto a carbon bed of a moving hearth furnace; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a ferrous oxide-rich molten slag; (d) metallizing the ferrous oxide of the molten slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a molten state; and (e) solidifying the slag after metallization of the ferrous oxide to form a matrix of titanium oxide-rich slag having a plurality of metallic iron granules distri
    Type: Application
    Filed: April 27, 2009
    Publication date: September 3, 2009
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Mitsutaka Hino, Akira Uragami, Isao Kobayashi, Thomas Peter Battle, Joseph M. Shekiro, JR.
  • Patent number: 7368096
    Abstract: The disclosure is directed to a process for isolating solids from a purification purge stream comprising an impurity present as a solid, wherein the purification purge stream is substantially free of chlorides other than titanium tetrachloride and vanadium chloride, the process comprising the steps of: (a) atomizing the purification purge stream comprising titanium tetrachloride as a liquid and an impurity present as a solid; (b) drying solids in the atomized purification purge stream by contacting the atomized stream with a titanium tetrachloride vapor stream such that the combined streams reach a temperature of at least about 140° C. to vaporize the liquid titanium tetrachloride, wherein the titanium tetrachloride vapor is substantially free of chlorides other than those of titanium and vanadium, and substantially free of non-condensable gases comprising CO, CO2, N2, or mixtures thereof; and (c) separating the impurity present as a solid from the vaporized titanium tetrachloride.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 6, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Xuqing Gu, Stephen Erwin Lyke, Steve Mirabella, Joseph M. Shekiro, Jr., Jodi Lynn Witt
  • Patent number: 6066248
    Abstract: A process for the electrolysis of aqueous hydrochloric acid solution in an electrochemical flow reactor comprising a solid polymer electrolyte membrane, an anode, a cathode and backings, wherein the anode is comprised of an electrocatalytic material and an ionomer is disclosed. The process provides high current density at low cell voltage, and low HCl outlet concentration while minimizing side reactions.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: May 23, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephen Erwin Lyke, Pallav Tatapudi
  • Patent number: 5824277
    Abstract: A process is disclosed for treating an exhaust gas stream containing COS and CO arising from chlorinating titanium-containing material with a cold plasma wherein oxygen is present and selectively oxidizing COS.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: October 20, 1998
    Assignee: E. I.du Pont de Nemours and Company
    Inventors: Daniel Campos, Stephen Erwin Lyke