Patents by Inventor Richard Thomas Johnson

Richard Thomas Johnson 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).

  • Bipolar lead acid battery cells with increased energy density
    Patent number: 11837701
    Abstract: A bipolar lead acid battery with increased energy density is provided. The battery includes a number of lead acid wafer cell that each comprise a negative electrode having a negative electrode plate and a negative active material positioned on the negative electrode plate, as well as a positive electrode having a positive electrode plate and a positive active material positioned on the positive electrode plate. The positive electrode plate comprises a metal foil with a conductive film thereon, such as a titanium foil or substrate with a titanium silicide coating thereon. The lead acid wafer cell also includes a separator between the negative and positive electrodes, wherein the separator includes an electrolyte for transferring charge between the negative and positive electrodes.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: December 5, 2023
    Assignee: Eskra Technical Products, Inc.
    Inventors: Michael David Eskra, Paula Margaret Ralston, Richard Thomas Johnson
  • BIPOLAR LEAD ACID BATTERY CELLS WITH INCREASED ENERGY DENSITY
    Publication number: 20220077506
    Abstract: A bipolar lead acid battery with increased energy density is provided. The battery includes a number of lead acid wafer cell that each comprise a negative electrode having a negative electrode plate and a negative active material positioned on the negative electrode plate, as well as a positive electrode having a positive electrode plate and a positive active material positioned on the positive electrode plate. The positive electrode plate comprises a metal foil with a conductive film thereon, such as a titanium foil or substrate with a titanium silicide coating thereon. The lead acid wafer cell also includes a separator between the negative and positive electrodes, wherein the separator includes an electrolyte for transferring charge between the negative and positive electrodes.
    Type: Application
    Filed: June 28, 2021
    Publication date: March 10, 2022
    Inventors: Michael David Eskra, Paula Margaret Ralston, Richard Thomas Johnson
  • Bipolar lead acid battery cells with increased energy density
    Patent number: 11050093
    Abstract: A bipolar lead acid battery with increased energy density is provided. The battery includes a number of lead acid wafer cell that each comprise a negative electrode having a negative electrode plate and a negative active material positioned on the negative electrode plate, as well as a positive electrode having a positive electrode plate and a positive active material positioned on the positive electrode plate. The positive electrode plate comprises a metal foil with a conductive film thereon, such as a titanium foil or substrate with a titanium silicide coating thereon. The lead acid wafer cell also includes a separator between the negative and positive electrodes, wherein the separator includes an electrolyte for transferring charge between the negative and positive electrodes.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: June 29, 2021
    Assignee: Eskra Technical Products, Inc.
    Inventors: Michael David Eskra, Paula Margaret Ralston, Richard Thomas Johnson
  • BIPOLAR LEAD ACID BATTERY CELLS WITH INCREASED ENERGY DENSITY
    Publication number: 20190393559
    Abstract: A bipolar lead acid battery with increased energy density is provided. The battery includes a number of lead acid wafer cell that each comprise a negative electrode having a negative electrode plate and a negative active material positioned on the negative electrode plate, as well as a positive electrode having a positive electrode plate and a positive active material positioned on the positive electrode plate. The positive electrode plate comprises a metal foil with a conductive film thereon, such as a titanium foil or substrate with a titanium silicide coating thereon. The lead acid wafer cell also includes a separator between the negative and positive electrodes, wherein the separator includes an electrolyte for transferring charge between the negative and positive electrodes.
    Type: Application
    Filed: June 25, 2018
    Publication date: December 26, 2019
    Inventors: Michael David Eskra, Paula Margaret Ralston, Richard Thomas Johnson