Patents by Inventor Graeme Puxty

Graeme Puxty 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: 12053736
    Abstract: The invention provides a process for regenerating a liquid absorbent, comprising: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent comprises at least one amine of Formula (I) and degradation product thereof comprising at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: August 6, 2024
    Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    Inventors: Graeme Puxty, Michael Webster-Gardiner, William Conway, Qi Yang, Robert Bennett, Paul Feron
  • Publication number: 20230149850
    Abstract: The invention provides a process for regenerating a liquid absorbent, comprising: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent comprises at least one amine of Formula (I) and degradation product thereof comprising at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 18, 2023
    Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    Inventors: Graeme PUXTY, Michael WEBSTER-GARDINER, William CONWAY, Qi YANG, Robert BENNETT, Paul FERON
  • Patent number: 11607642
    Abstract: The invention provides a process for regenerating a liquid absorbent, including: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent includes at least one amine of Formula (I) and degradation product thereof including at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: March 21, 2023
    Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    Inventors: Graeme Puxty, Michael Webster-Gardiner, William Conway, Qi Yang, Robert Bennett, Paul Feron
  • Publication number: 20220001325
    Abstract: The invention provides a process for regenerating a liquid absorbent, including: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent includes at least one amine of Formula (I) and degradation product thereof including at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 6, 2022
    Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    Inventors: Graeme PUXTY, Michael WEBSTER-GARDINER, William CONWAY, Qi YANG, Robert BENNETT, Paul FERON
  • Patent number: 9776127
    Abstract: The invention relates to a process for removing a target gas from a gas stream rich in the target gas and to an absorbent solution for absorbing a gas, such as carbon dioxide, from a gas stream. The invention involves the use of a photoactive compound that is convertible from a first state to a second state upon irradiation to facilitate removal or collection of a target gas from a gas stream.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: October 3, 2017
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Graeme Puxty, Paul Feron, Robert Bennett
  • Patent number: 9586174
    Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: March 7, 2017
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Erik Everhardus Bernardus Meuleman, Graeme Puxty, Paul Feron
  • Publication number: 20160158690
    Abstract: The invention relates to a process for removing a target gas from a gas stream rich in the target gas and to an absorbent solution for absorbing a gas, such as carbon dioxide, from a gas stream. The invention involves the use of a photoactive compound that is convertible from a first state to a second state upon irradiation to facilitate removal or collection of a target gas from a gas stream.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 9, 2016
    Applicant: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Graeme PUXTY, Paul FERON, Robert BENNETT
  • Publication number: 20130291724
    Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 7, 2013
    Inventors: Erik Everhardus Bernardus Meuleman, Graeme Puxty, Paul Feron