Patents by Inventor Douglas Geoffrey BROWN

Douglas Geoffrey BROWN 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).

  • Methods for re-using industrial waste for carbon sequestration and magnesium-based cements
    Patent number: 11905214
    Abstract: Magnesium-based cements (in particular, magnesium oxychloride (MOC) cement) are synthesized with a salt (magnesium chloride for MOC cement), water, and magnesium oxide. In this invention the salt is sourced from a waste brine. To the brine is added a base, for example a hydroxide or magnesium oxide. Carbon dioxide is then bubbled through the brine. Calcium carbonate precipitates out of solution. The brine is then left to cure and form cement. Optionally, calcium carbonate precipitate can be added back to (or left in) the brine prior to curing as a filler.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: February 20, 2024
    Assignee: ZS2 Technologies Ltd.
    Inventor: Douglas Geoffrey Brown
  • METHODS FOR RE-USING INDUSTRIAL WASTE FOR CARBON SEQUESTRATION AND MAGNESIUM-BASED CEMENTS
    Publication number: 20230139894
    Abstract: Magnesium-based cements (in particular, magnesium oxychloride (MOC) cement) are synthesized with a salt (magnesium chloride for MOC cement), water, and magnesium oxide. In this invention the salt is sourced from a waste brine. To the brine is added a base, for example a hydroxide or magnesium oxide. Carbon dioxide is then bubbled through the brine. Calcium carbonate precipitates out of solution. The brine is then left to cure and form cement. Optionally, calcium carbonate precipitate can be added back to (or left in) the brine prior to curing as a filler.
    Type: Application
    Filed: November 1, 2021
    Publication date: May 4, 2023
    Inventor: Douglas Geoffrey BROWN