Patents by Inventor Alan Gordon Tapster

Alan Gordon Tapster 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).

  • Method for producing a sulphided copper sorbent
    Patent number: 9873617
    Abstract: A method for producing a sulphided copper sorbent includes the steps of: (i) contacting a sorbent precursor material containing one or more sulphidable copper compounds, with a sulphiding gas stream including hydrogen sulphide to form a sulphided sulphur-containing sorbent material, and (ii) subjecting the sulphided sulphur-containing sorbent material to a heating step in which it is heated to a temperature above that used in the sulphiding step and ?110° C., under an inert gas selected from nitrogen, argon, helium, carbon dioxide, methane, and mixtures thereof, the inert gas optionally including hydrogen sulphide. The method provides sulphided copper sorbents that have reduced levels of elemental sulphur.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: January 23, 2018
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Matthew John Cousins, David Davis, Paul Rafferty, Sarah Ridley, Alan Gordon Tapster
  • METHOD FOR PRODUCING A SULPHIDED COPPER SORBENT
    Publication number: 20150060729
    Abstract: A method for producing a sulphided copper sorbent includes the steps of: (i) contacting a sorbent precursor material containing one or more sulphidable copper compounds, with a sulphiding gas stream including hydrogen sulphide to form a sulphided sulphur-containing sorbent material, and (ii) subjecting the sulphided sulphur-containing sorbent material to a heating step in which it is heated to a temperature above that used in the sulphiding step and ?110° C., under an inert gas selected from nitrogen, argon, helium, carbon dioxide, methane, and mixtures thereof, the inert gas optionally including hydrogen sulphide. The method provides sulphided copper sorbents that have reduced levels of elemental sulphur.
    Type: Application
    Filed: February 25, 2013
    Publication date: March 5, 2015
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Matthew John Cousins, David Davis, Paul Rafferty, Sarah Ridley, Alan Gordon Tapster