Patents by Inventor Gill Stephens

Gill Stephens 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: 11781160
    Abstract: The invention relates to methods for the production of methacrylates using methacrylate tolerant microorganisms.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: October 10, 2023
    Assignee: Mitsubishi Chemical UK Limited
    Inventors: Zoe Disley, Graham Ronald Eastham, David William Johnson, Laura Martins, Russel Menchavez, Luca Rossoni, Gill Stephens
  • Patent number: 11753660
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: September 12, 2023
    Assignee: Mitsubishi Chemical UK Limited
    Inventors: Graham Ronald Eastham, Gill Stephens, Andrew Yiakoumetti
  • Patent number: 11753661
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: September 12, 2023
    Assignee: Mitsubishi Chemical UK Limited
    Inventors: Graham Ronald Eastham, Gill Stephens, Andrew Yiakoumetti
  • Publication number: 20220372527
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Application
    Filed: April 14, 2022
    Publication date: November 24, 2022
    Inventors: Graham Ronald Eastham, Gill STEPHENS, Andrew Yiakoumetti
  • Publication number: 20220204999
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Application
    Filed: October 20, 2021
    Publication date: June 30, 2022
    Inventors: Graham Ronald EASTHAM, Gill STEPHENS, Andrew YIAKOUMETTI
  • Patent number: 11248243
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: February 15, 2022
    Assignee: MITSUBISHI CHEMICAL UK LIMITED
    Inventors: Graham Ronald Eastham, Gill Stephens, Andrew Yiakoumetti
  • Publication number: 20210207177
    Abstract: The invention relates to methods for the production of methacrylates using methacrylate tolerant microorganisms.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 8, 2021
    Inventors: Zoe Disley, Graham Ronald Eastham, David Wlliam Johnson, Laura Martins, Russel Menchavez, Luca Rossoni, Gill Stephens
  • Publication number: 20200308609
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Application
    Filed: May 22, 2020
    Publication date: October 1, 2020
    Inventors: Graham Ronald EASTHAM, Gill STEPHENS, Andrew Yiakoumetti
  • Patent number: 10724058
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: July 28, 2020
    Assignee: LUCITE INTERNATIONAL UK LIMITED
    Inventors: Graham Ronald Eastham, Gill Stephens, Andrew Yiakoumetti
  • Patent number: 10704063
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: July 7, 2020
    Assignee: LUCITE INTERNATIONAL UK LIMITED
    Inventors: Graham Ronald Eastham, Gill Stephens, Andrew Yiakoumetti
  • Publication number: 20190284587
    Abstract: The present invention relates to a process for the production of methyl methacrylate. The process of the present invention comprises the steps of: a) providing a microorganism in a fermentation medium, under conditions which said microorganism will produce a C3-C12 methacrylate ester; b) providing an organic phase in contact with the fermentation medium, said organic phase including C3-C12 methacrylate ester in a higher concentration than that in the fermentation medium; c) removing organic phase containing the said C3-C12 methacrylate ester from contact with the fermentation medium; and d) transesterifying the removed C3-C12 methacrylate ester with methanol, optionally after separation from the organic phase, to produce methyl methacrylate.
    Type: Application
    Filed: November 22, 2017
    Publication date: September 19, 2019
    Inventors: Graham Ronald Eastham, Zoe Bethany Clare Disley, David William Johnson, Gill Stephens, Mark Waugh
  • Publication number: 20180195095
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Application
    Filed: November 20, 2017
    Publication date: July 12, 2018
    Inventors: Graham Ronald EASTHAM, Gill STEPHENS, Andrew YIAKOUMETTI
  • Publication number: 20180171368
    Abstract: A process of producing methacrylic acid and/or derivatives thereof including the following steps: (a) biologically converting isobutyryl-CoA into methacrylyl-CoA by the action of an oxidase; and (b) converting methacrylyl-CoA into methacrylic acid and/or derivatives thereof. The invention also extends to microorganisms adapted to conduct the steps of the process.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 21, 2018
    Inventors: Graham Ronald EASTHAM, Gill STEPHENS, Andrew YIAKOUMETTI
  • Patent number: 8455421
    Abstract: This invention relates to methods for removing chewing gum and residues thereof from substrates using chewing gum modifying compositions comprising ionic liquids. In one embodiment, the chewing gum modifying composition may be used together with one or more oxidising reagents. In another embodiment, the chewing gum removal compositions further comprise one or more enzymes and one or more enzyme mediator compounds. The invention further relates to novel ionic liquid and enzyme compositions that are suitable for use in removing chewing gum residues.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: June 4, 2013
    Assignee: Expelliere Int Ltd
    Inventors: Kenneth R. Seddon, Nimal Gunaratne, Martyn J. Earle, Manuela Gilea, Gill Stephens, Ekaterina Ivanova, Lars Rehmann, Edward Green
  • Publication number: 20110319309
    Abstract: This invention relates to methods for removing chewing gum and residues thereof from substrates using chewing gum modifying compositions comprising ionic liquids. In one embodiment, the chewing gum modifying composition may be used together with one or more oxidising reagents. In another embodiment, the chewing gum removal compositions further comprise one or more enzymes and one or more enzyme mediator compounds. The invention further relates to novel ionic liquid and enzyme compositions that are suitable for use in removing chewing gum residues.
    Type: Application
    Filed: August 28, 2009
    Publication date: December 29, 2011
    Applicant: Enviroways Technologies Limited
    Inventors: Kenneth R. Seddon, Nimal Gunaratne, Martyn J. Earle, Manuela Gilea, Gill Stephens, Ekaterina Ivanova, Lars Rehmann, Edward Green