Patents by Inventor Ralph Hemphill

Ralph Hemphill 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).

  • FABRICATION OF CAPACITORS AND RECOVERY OF CAPACITOR FABRICATION MATERIALS
    Publication number: 20260128233
    Abstract: Fabricating a capacitor includes using a first etching solution to etch a first sheet of material so as to generate a spent etchant. At least one chemical component is recovered from the spent etchant. A second etching solution is used to etch a second sheet of material. The second etchant includes at least one of the chemical components that was recovered from the spent etchant.
    Type: Application
    Filed: December 30, 2025
    Publication date: May 7, 2026
    Inventors: Ralph Hemphill, Henry Buser, III, Shelley M. Smith, Brian Smith, Debbie Uselman