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).

  • Patent number: 10882802
    Abstract: 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: Grant
    Filed: June 2, 2020
    Date of Patent: January 5, 2021
    Assignee: UNIVERSITY OF OTTAWA
    Inventors: Ralph Thomas Baker, Alexandre James Sicard
  • Publication number: 20200354295
    Abstract: 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: Application
    Filed: June 2, 2020
    Publication date: November 12, 2020
    Inventors: Ralph Thomas BAKER, Alexandre James SICARD
  • Patent number: 10774021
    Abstract: 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: Grant
    Filed: August 30, 2017
    Date of Patent: September 15, 2020
    Assignee: University of Ottawa
    Inventors: Ralph Thomas Baker, Nicholas Orlando Andrella
  • Patent number: 10703695
    Abstract: 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: Grant
    Filed: August 30, 2017
    Date of Patent: July 7, 2020
    Assignee: University of Ottawa
    Inventors: Ralph Thomas Baker, Alexandre James Sicard
  • Publication number: 20190256445
    Abstract: 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: Application
    Filed: August 30, 2017
    Publication date: August 22, 2019
    Inventors: Ralph Thomas BAKER, Alexandre James SICARD
  • Publication number: 20190194096
    Abstract: 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: Application
    Filed: August 30, 2017
    Publication date: June 27, 2019
    Applicant: UNIVERSITY OF OTTAWA
    Inventors: Ralph Thomas BAKER, Nicholas Orlando ANDRELLA
  • Publication number: 20180179499
    Abstract: 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: Application
    Filed: June 3, 2016
    Publication date: June 28, 2018
    Inventors: Man Kit LAU, Cathy Staloch HASS, Hayat Nuru AHMED, Ralph Thomas BAKER, James R. MILLIS, Indira THAPA
  • Publication number: 20170113993
    Abstract: 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: Application
    Filed: June 10, 2015
    Publication date: April 27, 2017
    Inventors: Ralph Thomas BAKER, James F. WHITE, Leo E. MANZER, Spyridon NTAIS, Olena BARANOVA, Indira THAPA, Man Kit LAU, Cathy Staloch HASS
  • Patent number: 8884084
    Abstract: 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: Grant
    Filed: April 1, 2011
    Date of Patent: November 11, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur N. Mallikarjuna Rao, Allen Capron Sievert
  • Publication number: 20120119139
    Abstract: 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: Application
    Filed: April 1, 2011
    Publication date: May 17, 2012
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 7645902
    Abstract: 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: Grant
    Filed: June 22, 2006
    Date of Patent: January 12, 2010
    Assignee: Los Alamos National Security, LLC
    Inventors: Frances Helen Stephens, Ralph Thomas Baker
  • Patent number: 7544837
    Abstract: 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: Grant
    Filed: October 30, 2006
    Date of Patent: June 9, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Johanna Marie Blacquiere, Richard Jeffrey Keaton, Ralph Thomas Baker
  • Publication number: 20080108852
    Abstract: 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: Application
    Filed: May 31, 2007
    Publication date: May 8, 2008
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 6858762
    Abstract: 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: Grant
    Filed: June 12, 2003
    Date of Patent: February 22, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 6755942
    Abstract: The invention relates to azeotropic compositions of halogenated propanes with HF.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: June 29, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Publication number: 20030208090
    Abstract: 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: Application
    Filed: June 12, 2003
    Publication date: November 6, 2003
    Inventors: Ralph Thomas Baker, Ralph Newton Miller, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 6291730
    Abstract: 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: Grant
    Filed: January 28, 1998
    Date of Patent: September 18, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Viacheslav Alexandrovich Petrov, Velliyur Nott Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 6242658
    Abstract: 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: Grant
    Filed: August 6, 1999
    Date of Patent: June 5, 2001
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Ralph Thomas Baker, Richard Paul Beatty, Allen Capron Sievert, Robert Lewis Wallace, Jr.
  • Patent number: 6103937
    Abstract: 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: Grant
    Filed: December 29, 1998
    Date of Patent: August 15, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Sigridur Soley Kristjansdottir
  • Patent number: 6040487
    Abstract: 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: Grant
    Filed: January 28, 1998
    Date of Patent: March 21, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ralph Thomas Baker, Viacheslav Alexandrovich Petrov, Velliyurnott Mallikarjuna Rao