Patents by Inventor Stephen J. Andersen

Stephen J. Andersen 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).

  • Electrode testing fixture and system for material characterization and standardization
    Patent number: 12334520
    Abstract: A fixture assembly for testing or measuring a portion of a battery electrode includes a top plate, a baseplate, a connector and a support member. The top plate includes holes for creating a low-pressure region along a top surface of the top plate to hold the portion of the battery electrode to the top plate. The baseplate includes a bottom plate and side walls. The side walls extend upward from the bottom plate and define a vacuum chamber with the top plate. The connector is attached to the baseplate and configured to be connected to a vacuum hose for drawing air from the vacuum chamber to pull the portion of the battery electrode to the top plate. The support member is attached to the baseplate and configured to hold the fixture assembly in place relative to a measuring device that measures a physical characteristic of the battery electrode.
    Type: Grant
    Filed: December 10, 2022
    Date of Patent: June 17, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Robin James, Stephen J. Andersen, James Joseph Deininger, Raffaello Ardanese
  • ELECTRODE TESTING FIXTURE AND SYSTEM FOR MATERIAL CHARACTERIZATION AND STANDARDIZATION
    Publication number: 20240194958
    Abstract: A fixture assembly for testing or measuring a portion of a battery electrode includes a top plate, a baseplate, a connector and a support member. The top plate includes holes for creating a low-pressure region along a top surface of the top plate to hold the portion of the battery electrode to the top plate. The baseplate includes a bottom plate and side walls. The side walls extend upward from the bottom plate and define a vacuum chamber with the top plate. The connector is attached to the baseplate and configured to be connected to a vacuum hose for drawing air from the vacuum chamber to pull the portion of the battery electrode to the top plate. The support member is attached to the baseplate and configured to hold the fixture assembly in place relative to a measuring device that measures a physical characteristic of the battery electrode.
    Type: Application
    Filed: December 10, 2022
    Publication date: June 13, 2024
    Inventors: Robin JAMES, Stephen J. Andersen, James Joseph Deininger, Raffaello Ardanese