Patents by Inventor Stephen Erwin
Stephen Erwin 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).
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Patent number: 8372179Abstract: 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 toType: GrantFiled: October 14, 2008Date of Patent: February 12, 2013Assignee: E I du Pont de Nemours and CompanyInventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Joseph M. Shekiro, Jr., Guangliang Liu
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Publication number: 20100285326Abstract: 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 distriType: ApplicationFiled: July 19, 2010Publication date: November 11, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: JOHN JAMES BARNES, Stephen Erwin Lyke, Dat Nguyen, Mitsutaka Hino, Akira Uragami, Isao Kobayashi, Thomas Peter Battle, Joseph M. Shekiro, JR.
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Publication number: 20100237280Abstract: 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 aType: ApplicationFiled: October 14, 2008Publication date: September 23, 2010Inventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Joseph M. Shekiro, JR., Guangliang Liu
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Patent number: 7780756Abstract: 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 distriType: GrantFiled: April 27, 2009Date of Patent: August 24, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Akira Uragami, Isao Kobayashi, Mitsutaka Hino, Thomas Peter Battle, Joseph M. Shekiro, Jr.
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Publication number: 20090217784Abstract: 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 distriType: ApplicationFiled: April 27, 2009Publication date: September 3, 2009Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: John James Barnes, Stephen Erwin Lyke, Dat Nguyen, Mitsutaka Hino, Akira Uragami, Isao Kobayashi, Thomas Peter Battle, Joseph M. Shekiro, JR.
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Patent number: 7368096Abstract: 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: GrantFiled: June 7, 2005Date of Patent: May 6, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Xuqing Gu, Stephen Erwin Lyke, Steve Mirabella, Joseph M. Shekiro, Jr., Jodi Lynn Witt
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Publication number: 20060207995Abstract: Vending machine (10) houses two rows of four stacks of bags (13), differing in material or size. On coin actuation, bag (13) on the top of a selected stack is gripped by suction cup (27) and moved so that it falls into compartment (14), from where it is externally accessible. Suction cup (27) is movable, by a pneumatic ram, to-and-fro along horizontal arm (24) to grip, say, bag (13) of a rear stack and bring it forward so that it can be deposited in compartment (14). Arm (24), in turn, is movable up or down vertical arm (36) that, in turn, is movable horizontally along guide track (28) so that different stacks can be accessed.Type: ApplicationFiled: October 10, 2003Publication date: September 21, 2006Inventor: Stephen Erwin
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Patent number: 6066248Abstract: 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: GrantFiled: October 27, 1998Date of Patent: May 23, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Stephen Erwin Lyke, Pallav Tatapudi
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Patent number: 5824277Abstract: 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: GrantFiled: December 5, 1996Date of Patent: October 20, 1998Assignee: E. I.du Pont de Nemours and CompanyInventors: Daniel Campos, Stephen Erwin Lyke
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Patent number: D697610Type: GrantFiled: February 26, 2013Date of Patent: January 14, 2014Assignee: Bumble BE Holdings, LLCInventor: Stephen Erwin Young
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Patent number: D739517Type: GrantFiled: April 23, 2014Date of Patent: September 22, 2015Assignee: Bumble BE Holdings, LLCInventors: Douglas Pick, Stephen Erwin Young