Patents by Inventor Andrew C CORBETT

Andrew C CORBETT 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).

  • Publication number: 20250042834
    Abstract: A method for converting a lignin-derived material into at least one esterified lignin derivative, said method comprising the steps of: providing said lignin-derived material selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; providing an acidic composition having a pH of less than 1, said acidic composition comprising: an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and an alcohol selected from the group consisting of C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; combining said lignin-derived material with said acidic composition into a reaction mixture; heating up said mixture to a temperature ranging from 25° C. to 120° C.; and allowing sufficient time of reaction to convert at least a portion of said lignin-derived material into said at least one esterified lignin derivative.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Inventors: Matthew DEWIT, Andrew C. CORBETT, Markus WEISSENBERGER
  • Publication number: 20220195665
    Abstract: Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; aryl sulfonic acid; triethanolamine; and combinations thereof; a metal salt; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.
    Type: Application
    Filed: August 18, 2021
    Publication date: June 23, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G WYNNYK, Matthew DEWIT, Andrew C CORBETT
  • Publication number: 20220195664
    Abstract: A process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of: providing said lignocellulosic feedstock; providing a composition comprising; an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; imidazole derivatives; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a peroxide salt; and a peroxide; exposing said lignocellulosic feedstock to said composition for a period of time sufficient to depolymerize substantially all of the lignin present in said lignocellulosic feedstock into lignin oligomers and lignin monomers; wherein said process is carried out at atmospheric pressure.
    Type: Application
    Filed: August 18, 2021
    Publication date: June 23, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G. WYNNYK, Matthew DEWIT, Andrew C. CORBETT
  • Publication number: 20220186435
    Abstract: Method for controlled delignification of lignocellulosic feedstock, said method comprising the steps of: providing a reactive phase of pH less than 1, said reactive phase comprising: water; sulfuric acid; a source of peroxide; a modifying agent, said modifying agent adapted to control the reactivity of the sulfuric acid; providing a holding phase, said holding phase comprising an organic solvent which does not react with the aqueous acidic composition; combining said reactive phase and holding phase to form a reaction mixture; exposing a lignocellulosic material to said reaction mixture for a period of time sufficient to allow delignification of the lignocellulosic material.
    Type: Application
    Filed: August 18, 2021
    Publication date: June 16, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G WYNNYK, Matthew DEWIT, Andrew C CORBETT
  • Publication number: 20220186436
    Abstract: Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifiying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.
    Type: Application
    Filed: August 18, 2021
    Publication date: June 16, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G WYNNYK, Matthew DEWIT, Andrew C CORBETT
  • Publication number: 20220186434
    Abstract: Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole derivative; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; adding an organic solvent to the resulting mixture; allowing a delignification reaction to occur for a period of time sufficient to remove at least 80% of the lignin present on said plant material.
    Type: Application
    Filed: August 17, 2021
    Publication date: June 16, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G. WYNNYK, Matthew DEWIT, Andrew C. CORBETT
  • Publication number: 20220170206
    Abstract: Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a capping agent; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material. Also disclosed are compositions to accomplish such delignification and processes using such.
    Type: Application
    Filed: August 18, 2021
    Publication date: June 2, 2022
    Inventors: Clay PURDY, Markus WEISSENBERGER, Markus PAGELS, Kyle G WYNNYK, Matthew DEWIT, Andrew C CORBETT