Patents by Inventor Ralph Thomas Baker
Ralph Thomas Baker 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: 10882802Abstract: The present application provides a hydrodefluorodimerization process, which is useful in the synthesis of, for example, fluoroolefins that can be used as refrigerants, blowers and the like. The process is an “early-stage fluorination” process, wherein precursors containing fluorine are assembled into the desired product using a zerovalent nickel catalyst. Also provided is a liquid composition comprising one or more fluoroolefin produced by this catalytic process.Type: GrantFiled: June 2, 2020Date of Patent: January 5, 2021Assignee: UNIVERSITY OF OTTAWAInventors: Ralph Thomas Baker, Alexandre James Sicard
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Publication number: 20200354295Abstract: The present application provides a hydrodefluorodimerization process, which is useful in the synthesis of, for example, fluoroölefins that can be used as refrigerants, blowers and the like. The process is an “early-stage fluorination” process, wherein precursors containing fluorine are assembled into the desired product using a zerovalent nickel catalyst. Also provided is a liquid composition comprising one or more fluoroölefin produced by this catalytic process.Type: ApplicationFiled: June 2, 2020Publication date: November 12, 2020Inventors: Ralph Thomas BAKER, Alexandre James SICARD
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Process for preparation of hydrofluoroalkenes by selective catalytic consecutive hydrodefluorination
Patent number: 10774021Abstract: The present application provides a hydrodefluorination process for the preparation of hydrofluoroalkenes by catalyzed substitution of one or more F atoms of a C2-C30 fluoroalkene, or a C2-C10 fluoroalkene, with one or more H atoms using a hydride source, such as a silane, and copper catalyst. During this process at least one C—F bond in the fluoroakene is converted to a C—H bond. The process is useful in the manufacture of hydrofluoroalkenes, such as hydrofluoroalkenes employed as, for example, refrigerants and blowers. Also provided are precatalyst compositions for performing the process, and formulations manufactured from hydrofluoroalkenes produced using the process.Type: GrantFiled: August 30, 2017Date of Patent: September 15, 2020Assignee: University of OttawaInventors: Ralph Thomas Baker, Nicholas Orlando Andrella -
Patent number: 10703695Abstract: The present application provides a hydrodefluorodimerization process, which is useful in the synthesis of, for example, fluoroölefins that can be used as refrigerants, blowers and the like. The process is an “early-stage fluorination” process, wherein precursors containing fluorine are assembled into the desired product using a zerovalent nickel catalyst. Also provided is a liquid composition comprising one or more fluoroölefin produced by this catalytic process.Type: GrantFiled: August 30, 2017Date of Patent: July 7, 2020Assignee: University of OttawaInventors: Ralph Thomas Baker, Alexandre James Sicard
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Publication number: 20190256445Abstract: The present application provides a hydrodefluorodimerization process, which is useful in the synthesis of, for example, fluoroolefins that can be used as refrigerants, blowers and the like. The process is an “early-stage fluorination” process, wherein precursors containing fluorine are assembled into the desired product using a zerovalent nickel catalyst. Also provided is a liquid composition comprising one or more fluoroolefin produced by this catalytic process.Type: ApplicationFiled: August 30, 2017Publication date: August 22, 2019Inventors: Ralph Thomas BAKER, Alexandre James SICARD
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PROCESS FOR PREPARATION OF HYDROFLUOROALKENES BY SELECTIVE CATALYTIC CONSECUTIVE HYDRODEFLUORINATION
Publication number: 20190194096Abstract: The present application provides a hydrodefluorination process for the preparation of hydrofluoroalkenes by catalyzed substitution of one or more F atoms of a C2-C30 fluoroalkene, or a C2-C10 fluoroalkene, with one or more H atoms using a hydride source, such as a silane, and copper catalyst. During this process at least one C—F bond in the fluoroakene is converted to a C—H bond. The process is useful in the manufacture of hydrofluoroalkenes, such as hydrofluoroalkenes employed as, for example, refrigerants and blowers. Also provided are precatalyst compositions for performing the process, and formulations manufactured from hydrofluoroalkenes produced using the process.Type: ApplicationFiled: August 30, 2017Publication date: June 27, 2019Applicant: UNIVERSITY OF OTTAWAInventors: Ralph Thomas BAKER, Nicholas Orlando ANDRELLA -
Publication number: 20180179499Abstract: The description provides, inter alia, recombinant microorganisms, engineered metabolic pathways, chemical catalysts, and products produced through the use of the described methods and materials. The products produced include functionalized alpha substituted C4 dicarboxylic acids and functionalized acrylic acids and salts, esters and lactones thereof.Type: ApplicationFiled: June 3, 2016Publication date: June 28, 2018Inventors: Man Kit LAU, Cathy Staloch HASS, Hayat Nuru AHMED, Ralph Thomas BAKER, James R. MILLIS, Indira THAPA
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Publication number: 20170113993Abstract: This disclosure relates to methods for converting homocitric acid to adipic acid, and more particularly to methods of using metal catalysts to catalyze the conversion of homocitric acid to adipic acid.Type: ApplicationFiled: June 10, 2015Publication date: April 27, 2017Inventors: Ralph Thomas BAKER, James F. WHITE, Leo E. MANZER, Spyridon NTAIS, Olena BARANOVA, Indira THAPA, Man Kit LAU, Cathy Staloch HASS
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Patent number: 8884084Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2?CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. Azeotropes of CClF2CH2CF3 with HF and azeotropes of CF3CH2CHF2 with HF are also disclosed; as are process for producing such azeotropes.Type: GrantFiled: April 1, 2011Date of Patent: November 11, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur N. Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20120119139Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2?CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. Azeotropes of CClF2CH2CF3 with HF and azeotropes of CF3CH2CHF2 with HF are also disclosed; as are process for producing such azeotropes.Type: ApplicationFiled: April 1, 2011Publication date: May 17, 2012Applicant: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 7645902Abstract: A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric [R1R2B—NR3R4]n product. The method of dehydrogenating amine-boranes may be used to generate H2 for portable power sources.Type: GrantFiled: June 22, 2006Date of Patent: January 12, 2010Assignee: Los Alamos National Security, LLCInventors: Frances Helen Stephens, Ralph Thomas Baker
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Patent number: 7544837Abstract: A method of dehydrogenating an amine-borane having the formula R1H2N—BH2R2 using base metal catalyst. The method generates hydrogen and produces at least one of a [R1HN—BHR2]m oligomer and a [R1N—BR2]n oligomer. The method of dehydrogenating amine-boranes may be used to generate H2 for portable power sources, such as, but not limited to, fuel cells.Type: GrantFiled: October 30, 2006Date of Patent: June 9, 2009Assignee: Los Alamos National Security, LLCInventors: Johanna Marie Blacquiere, Richard Jeffrey Keaton, Ralph Thomas Baker
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Publication number: 20080108852Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2?CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.Type: ApplicationFiled: May 31, 2007Publication date: May 8, 2008Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 6858762Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2?CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.Type: GrantFiled: June 12, 2003Date of Patent: February 22, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 6755942Abstract: The invention relates to azeotropic compositions of halogenated propanes with HF.Type: GrantFiled: August 14, 2000Date of Patent: June 29, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Publication number: 20030208090Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2═CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF.Type: ApplicationFiled: June 12, 2003Publication date: November 6, 2003Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 6291730Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2═C3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing: (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.Type: GrantFiled: January 28, 1998Date of Patent: September 18, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 6242658Abstract: Processes involving certain nickel metallacycles with phosphite ligands are disclosed as useful for the manufacture of selected substituted hydrocarbons. Also disclosed are selected compounds including both nickel and phosphite ligands.Type: GrantFiled: August 6, 1999Date of Patent: June 5, 2001Assignee: E. I. duPont de Nemours and CompanyInventors: Ralph Thomas Baker, Richard Paul Beatty, Allen Capron Sievert, Robert Lewis Wallace, Jr.
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Patent number: 6103937Abstract: A process for producing unsaturated nitrogen containing compounds such as enamides, enamines and aryl amineslamides is disclosed. A vinyl halide or aryl halide is reacted with an --NH-- containing compound in the presence of a catalytic amount of a catalyst precursor composition comprising a zero-valent nickel and an organophosphine or carbene ligand. One step coupling of vinyl halides and aryl halides with --NH-- containing compounds is made possible by practice of the invention.Type: GrantFiled: December 29, 1998Date of Patent: August 15, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Sigridur Soley Kristjansdottir
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Patent number: 6040487Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR.sup.1 R.sup.2 CBR.sup.3 R.sup.4 (where, A, B, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR.sup.1 R.sup.2 .dbd.CR.sup.3 R.sup.4, in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper, and (ii) a promoter selected from aromatic or aliphatic hetercyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, hydrofluorocarbons may be formed therefrom by reacting the hydrochlorofluorocarbons with HF.Type: GrantFiled: January 28, 1998Date of Patent: March 21, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Thomas Baker, Viacheslav Alexandrovich Petrov, Velliyurnott Mallikarjuna Rao