Patents by Inventor David Keith FISHER

David Keith FISHER 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: 20240116781
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials. Rare earth magnets electrically connect electrolysis electrode structures and serve as electrolysis electrode segments.
    Type: Application
    Filed: August 23, 2023
    Publication date: April 11, 2024
    Inventor: David Keith FISHER
  • Patent number: 11772991
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials. Rare earth magnets electrically connect electrolysis electrode structures and serve as electrolysis electrode segments.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 3, 2023
    Assignee: FisherH2O, LLC
    Inventor: David Keith Fisher
  • Publication number: 20220135448
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials.
    Type: Application
    Filed: January 18, 2022
    Publication date: May 5, 2022
    Inventor: David Keith FISHER
  • Patent number: 11261108
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a shiny while leaving water substantially free of such materials.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: March 1, 2022
    Assignee: FisherH2O, LLC
    Inventor: David Keith Fisher
  • Publication number: 20210206669
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials. Rare earth magnets electrically connect electrolysis electrode structures and serve as electrolysis electrode segments.
    Type: Application
    Filed: December 18, 2020
    Publication date: July 8, 2021
    Inventor: David Keith FISHER
  • Patent number: 10662089
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: May 26, 2020
    Assignee: FISHERH2O, LLC
    Inventor: David Keith Fisher
  • Publication number: 20200156966
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a shiny while leaving water substantially free of such materials.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Inventor: David Keith FISHER
  • Publication number: 20190382290
    Abstract: An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 19, 2019
    Inventor: David Keith FISHER