Patents by Inventor Paul Duncan HYWEL-EVANS

Paul Duncan HYWEL-EVANS 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).

  • System And Method For Sealing A Well
    Publication number: 20230058242
    Abstract: A method of controlled hydration expansion of a smectite-containing day mineral (SCM) within an aqueous environment in a confined volumetric space, the method comprising the steps of: —introducing an amount of an SCM into said volumetric space via an inlet thereinto, and initiating the hydration expansion of the SCM to release SCM particles into the confined volumetric space, and increase the pressure therein; and —introducing a flow path modification to control said released SCM particles from undergoing a recompression, said modification thereby maintaining the pressure in the volumetric space.
    Type: Application
    Filed: February 1, 2021
    Publication date: February 23, 2023
    Inventor: Paul Duncan Hywel-Evans
  • Accelerator for hydraulic composition
    Patent number: 10793479
    Abstract: A method of making a liquid hardening accelerator for a hydraulic composition the method comprising: (at adding sugar and lithium carbonate to water to form a dispersion of the lithium carbonate in a sugar solution; (b) adding aluminium sulphate to the dispersion to form a liquid hardening accelerator.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 6, 2020
    Assignee: FINE POWDER TECHNOLOGIES PTY LTD
    Inventors: Michael Scott Archer, Paul Duncan Hywel-Evans
  • ACCELERATOR FOR HYDRAULIC COMPOSITION
    Publication number: 20190010092
    Abstract: A method of making a liquid hardening accelerator for a hydraulic composition the method comprising: (at adding sugar and lithium carbonate to water to form a dispersion of the lithium carbonate in a sugar solution; (b) adding aluminium sulphate to the dispersion to form a liquid hardening accelerator.
    Type: Application
    Filed: December 22, 2016
    Publication date: January 10, 2019
    Applicant: FINE POWDER TECHNOLOGIES PTY LTD
    Inventors: Michael Scott ARCHER, Paul Duncan HYWEL-EVANS