Patents by Inventor Grace S. Chang

Grace S. Chang 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).

  • Battery cell design and method of its construction
    Patent number: 8389154
    Abstract: A compact, robust, multifunctional and highly manufacturable rechargeable battery cell is provided. The cell design dedicates minimal internal volume to inert components of the cell. This is accomplished, in part, by providing multiple functionalities to individual cell components.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: March 5, 2013
    Assignee: A123 Systems, Inc.
    Inventors: Jonah S. Myerberg, Donald G. Dafoe, Grace S. Chang, Andrew C. Chu, Hung-Chieh Shiao
  • Battery cell design and methods of its construction
    Patent number: 8236441
    Abstract: In some embodiments, a battery cell can include an assembly having an anode sheet and a cathode sheet separated by separator membranes, each sheet having an electroactive layer on a current collector. At least one of the current collectors can be in electrical communication with conducting tabs that extend from at least one of the anode sheet and the cathode sheet, the conducting tabs extends from an end face of the spirally wound assembly. In addition, the cell can include a first tab insulator having concentrically positioned outer and inner members, each of the outer and inner members having at least one slot that allows one or more of the plurality of conducting tabs to pass through. The inner and outer members are adjustable with respect to relative angular orientation of the at least one slot on the outer and inner members of the first tab insulator.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: August 7, 2012
    Assignee: A123 Systems, Inc.
    Inventors: William H. Gardner, Grace S. Chang
  • BATTERY CELL DESIGN AND METHOD OF ITS CONSTRUCTION
    Publication number: 20110212360
    Abstract: A compact, robust, multifunctional and highly manufacturable rechargeable battery cell is provided. The cell design dedicates minimal internal volume to inert components of the cell. This is accomplished, in part, by providing multiple functionalities to individual cell components.
    Type: Application
    Filed: April 15, 2011
    Publication date: September 1, 2011
    Applicant: A123 Systems
    Inventors: Jonah S. MYERBERG, Donald G. DAFOE, Grace S. CHANG, Andrew C. CHU, Hung-Chieh SHIAO
  • Battery cell design and method of its construction
    Patent number: 7927732
    Abstract: A compact, robust, multifunctional and highly manufacturable rechargeable battery cell is provided. The cell design dedicates minimal internal volume to inert components of the cell. This is accomplished, in part, by providing multiple functionalities to individual cell components.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: April 19, 2011
    Assignee: A123 Systems, Inc.
    Inventors: Jonah S. Myerberg, Donald G. Dafoe, Grace S. Chang, Andrew C. Chu, Hung-Chieh Shiao
  • BATTERY CELL DESIGN AND METHODS OF ITS CONSTRUCTION
    Publication number: 20090029240
    Abstract: In some embodiments, a battery cell can include an assembly having an anode sheet and a cathode sheet separated by separator membranes, each sheet having an electroactive layer on a current collector. At least one of the current collectors can be in electrical communication with conducting tabs that extend from at least one of the anode sheet and the cathode sheet, the conducting tabs extends from an end face of the spirally wound assembly. In addition, the cell can include a first tab insulator having concentrically positioned outer and inner members, each of the outer and inner members having at least one slot that allows one or more of the plurality of conducting tabs to pass through. The inner and outer members are adjustable with respect to relative angular orientation of the at least one slot on the outer and inner members of the first tab insulator.
    Type: Application
    Filed: July 23, 2008
    Publication date: January 29, 2009
    Applicant: A123 SYSTEMS, INC.
    Inventors: William H. GARDNER, Grace S. CHANG