Patents by Inventor Joshua Hufford

Joshua Hufford 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).

  • Systems And Methods For Aqueous Recovery Of Lead From Lead Acid Batteries With Reduced Electrolyte Demand
    Publication number: 20230313400
    Abstract: Lead is recovered from lead paste of a lead acid battery in a continuous and electrochemical lead recovery process. In especially preferred aspects, lead paste is processed to remove residual sulfates, and the so treated lead paste is subjected to a thermal treatment step that removes residual moisture and reduces lead dioxide to lead oxide. Advantageously, such pretreatment will avoid lead dioxide accumulation and electrolyte dilution.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: Aqua Metals Inc.
    Inventors: Samaresh Mohanta, Joshua Hufford
  • Systems and methods for aqueous recovery of lead from lead acid batteries with reduced electrolyte demand
    Patent number: 11708640
    Abstract: Lead is recovered from lead paste of a lead acid battery in a continuous and electrochemical lead recovery process. In especially preferred aspects, lead paste is processed to remove residual sulfates, and the so treated lead paste is subjected to a thermal treatment step that removes residual moisture and reduces lead dioxide to lead oxide. Advantageously, such pretreatment will avoid lead dioxide accumulation and electrolyte dilution.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: July 25, 2023
    Assignee: Aqua Metals Inc.
    Inventors: Samaresh Mohanta, Joshua Hufford
  • Systems And Methods For Aqueous Recovery Of Lead From Lead Acid Batteries With Reduced Electrolyte Demand
    Publication number: 20220341051
    Abstract: Lead is recovered from lead paste of a lead acid battery in a continuous and electrochemical lead recovery process. In especially preferred aspects, lead paste is processed to remove residual sulfates, and the so treated lead paste is subjected to a thermal treatment step that removes residual moisture and reduces lead dioxide to lead oxide. Advantageously, such pretreatment will avoid lead dioxide accumulation and electrolyte dilution.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 27, 2022
    Applicant: Aqua Metals Inc.
    Inventors: Samaresh Mohanta, Joshua Hufford