Patents by Inventor Lisa Edith Helberg
Lisa Edith Helberg 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: 11040903Abstract: The present invention provides a process for separating iodine from a NaCl brine, comprising the following steps: (a) providing said NaCl brine containing iodide, (b) adjusting the pH of said NaCl brine to be no greater than 1.5, (c) adding oxidizing agent, such as chlorine containing oxidizing agent, to said NaCl brine resulting from step (b) to obtain an oxidation-reduction potential in said NaCl brine of from 560 mV to 925 mV, the combination of said pH of no greater than 1.5 and oxidation-reduction potential of 560 mV to 925 mV resulting in the formation of an iodine-chlorine anionic complex, and (d) contacting nonionic adsorption resin and said NaCl brine from step (c) one with the other to adsorb said iodine from this brine, to obtain as a result thereof NaCl brine wherein the iodine content therein is preferably no greater than 100 ppbw, more preferably no greater than 10 ppbw.Type: GrantFiled: September 23, 2016Date of Patent: June 22, 2021Assignee: THE CHEMOURS COMPANY FC, LLCInventors: Stephen Thomas Breske, Lisa Edith Helberg, Peter Hill
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Publication number: 20170096346Abstract: The present invention provides a process for separating iodine from a NaCl brine, comprising the following steps: (a) providing said NaCl brine containing iodide, (b) adjusting the pH of said NaCl brine to be no greater than 1.5, (c) adding oxidizing agent, such as chlorine containing oxidizing agent, to said NaCl brine resulting from step (b) to obtain an oxidation-reduction potential in said NaCl brine of from 560 mV to 925 mV, the combination of said pH of no greater than 1.5 and oxidation-reduction potential of 560 mV to 925 mV resulting in the formation of an iodine-chlorine anionic complex, and (d) contacting nonionic adsorption resin and said NaCl brine from step (c) one with the other to adsorb said iodine from this brine, to obtain as a result thereof NaCl brine wherein the iodine content therein is preferably no greater than 100 ppbw, more preferably no greater than 10 ppbw.Type: ApplicationFiled: September 23, 2016Publication date: April 6, 2017Inventors: STEPHEN THOMAS BRESKE, LISA EDITH HELBERG, PETER HILL
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Patent number: 8906340Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.Type: GrantFiled: February 22, 2012Date of Patent: December 9, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Lisa Edith Helberg
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Patent number: 8889094Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. In another embodiment, the vanadium is removed separately through a commercial process and the resulting arsenic containing commercial grade of purified TiCl4 is reacted with elemental tin, sulfur and ferric chloride to substantially reduce the arsenic. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.Type: GrantFiled: February 22, 2012Date of Patent: November 18, 2014Assignee: E I du Pont de Nemours and CompanyInventor: Lisa Edith Helberg
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Publication number: 20130302227Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.Type: ApplicationFiled: February 22, 2012Publication date: November 14, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: Lisa Edith Helberg
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Publication number: 20130299335Abstract: The present disclosure relates to reacting tin metal or SnCl2 with crude TiCl4 containing vanadium to produce pure TiCl4, SnCl4, and a vanadium solid co-product. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.Type: ApplicationFiled: February 22, 2012Publication date: November 14, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: Lisa Edith Helberg
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Publication number: 20130302228Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. In another embodiment, the vanadium is removed separately through a commercial process and the resulting arsenic containing commercial grade of purified TiCl4 is reacted with elemental tin, sulfur and ferric chloride to substantially reduce the arsenic. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.Type: ApplicationFiled: February 22, 2012Publication date: November 14, 2013Applicant: EI DU PONT DE NEMOURS AND COMPANYInventor: Lisa Edith Helberg
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Patent number: 8309361Abstract: This disclosure relates to a method for detecting at least one analyte in a tetrachloride sample comprising titanium, tin or silicon tetrachloride; comprising, (a) adding a mixture of water and acid, typically hydrochloric acid, to the sample under conditions effective for forming an aqueous solution of the sample; (b) introducing the aqueous solution of the sample into an inductively coupled mass spectrometer having a cell selected from the group of a reactive cell and a collision cell or both and producing an analyte ion comprising an interfering species; (c) contacting the analyte ion with a gas to produce a product which is substantially free from the interfering species; and (d) detecting and measuring at least one signal from the analyte in the solution. This disclosure further relates to a method for making an aqueous titanium, tin or silicon tetrachloride sample suitable for analysis in using inductively coupled plasma mass spectroscopy.Type: GrantFiled: November 23, 2009Date of Patent: November 13, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Lisa Edith Helberg, Jane Ramsey Marsh, Craig Steven Westphal
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Patent number: 7858035Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.Type: GrantFiled: July 27, 2007Date of Patent: December 28, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: James Timothy Cronin, Thomas Shields Elkins, Lisa Edith Helberg, Angela Ruth Strzelecki
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Patent number: 7803323Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.Type: GrantFiled: July 27, 2007Date of Patent: September 28, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: James Timothy Cronin, Thomas Shields Elkins, Lisa Edith Helberg, Angela Ruth Strzelecki
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Publication number: 20100065736Abstract: This disclosure relates to a method for detecting at least one analyte in a tetrachloride sample comprising titanium, tin or silicon tetrachloride; comprising, (a) adding a mixture of water and acid, typically hydrochloric acid, to the sample under conditions effective for forming an aqueous solution of the sample; (b) introducing the aqueous solution of the sample into an inductively coupled mass spectrometer having a cell selected from the group of a reactive cell and a collision cell or both and producing an analyte ion comprising an interfering species; (c) contacting the analyte ion with a gas to produce a product which is substantially free from the interfering species; and (d) detecting and measuring at least one signal from the analyte in the solution. This disclosure further relates to a method for making an aqueous titanium, tin or silicon tetrachloride sample suitable for analysis in using inductively coupled plasma mass spectroscopy.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Lisa Edith Helberg, Jane Ramsey Marsh, Craig Steven Westphal
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Publication number: 20080305032Abstract: The disclosure is directed to a process for purifying a titanium chloride-containing feedstock using an activated carbon bed, comprising: (a) providing the titanium chloride-containing feedstock comprising an impurity, such as arsenic, and at least one tracker species selected from the group consisting of phosgene, carbonyl sulfide, sulfur dioxide, carbon disulfide, thionyl chloride, sulfur chloride, SO2Cl2, carbon dioxide, and hydrochloric acid and combinations thereof; (b) feeding the titanium chloride-containing feedstock to the activated carbon bed; (c) contacting the titanium chloride-containing feedstock with the activated carbon by flowing the feedstock through the activated carbon bed to remove at least a portion of both the tracker species and the impurity from the feedstock to form a treated product; (d) continuing the flow of the titanium chloride-containing feedstock at least until the tracker species is detected in the treated product; and (e) regenerating the activated carbon bed.Type: ApplicationFiled: August 15, 2008Publication date: December 11, 2008Inventors: James Timothy Cronin, Lisa Edith Helberg
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Publication number: 20070292991Abstract: This disclosure relates to a method for detecting at least one analyte in a tetrachloride sample comprising titanium, tin or silicon tetrachloride; comprising, (a) adding a mixture of water and acid, typically hydrochloric acid, to the sample under conditions effective for forming an aqueous solution of the sample; (b) introducing the aqueous solution of the sample into an inductively coupled mass spectrometer having a cell selected from the group of a reactive cell and a collision cell or both and producing an analyte ion comprising an interfering species; (c) contacting the analyte ion with a gas to produce a product which is substantially free from the interfering species; and (d) detecting and measuring at least one signal from the analyte in the solution. This disclosure further relates to a method for making an aqueous titanium, tin or silicon tetrachloride sample suitable for analysis in using inductively coupled plasma mass spectroscopy.Type: ApplicationFiled: June 20, 2006Publication date: December 20, 2007Inventors: Lisa Edith Helberg, Jane Ramsey Marsh, Craig Steven Westphal
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Patent number: 7300630Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.Type: GrantFiled: September 27, 2002Date of Patent: November 27, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: James Timothy Cronin, Thomas Shields Elkins, Lisa Edith Helberg, Angela Ruth Strzelecki
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Publication number: 20040060576Abstract: A cleaning system and method for in-process sensors wherein a scouring jet discharges process fluid as the cleaning agent to remove solids and other contaminants from the surface of the sensor.Type: ApplicationFiled: September 27, 2002Publication date: April 1, 2004Inventors: James Timothy Cronin, Thomas Shields Elkins, Lisa Edith Helberg, Angela Ruth Strzelecki
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Patent number: 6562312Abstract: The present invention is a process for controlling, at an aim point, the passivation of aluminum chloride in the chlorinator discharge stream in a process for making titanium tetrachloride.Type: GrantFiled: December 18, 2000Date of Patent: May 13, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: James Timothy Cronin, Thomas Shields Elkins, Hans Hellmut Glaeser, Lisa Edith Helberg, Angela Ruth Strzelecki
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Publication number: 20010016182Abstract: The present invention is a process for controlling, at an aim point, the passivation of aluminum chloride in the chlorinator discharge stream in a process for making titanium tetrachloride.Type: ApplicationFiled: December 18, 2000Publication date: August 23, 2001Inventors: James Timothy Cronin, Thomas Shields Elkins, Hans Hellmut Glaeser, Lisa Edith Helberg, Angela Ruth Strzelecki