Patents by Inventor Peter R. Tsai

Peter R. Tsai 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).

  • Electrochemical cell having low volume collector assembly
    Patent number: 8236444
    Abstract: A low volume collector assembly and an electrochemical cell employing a collector assembly are provided. The electrochemical cell includes an electrically conductive can having inner and outer electrodes disposed therein. The cell also includes a collector assembly assembled to an open end of the can to provide closure to the open end of the can. The collector assembly includes a seal and a cover assembled to the seal to provide a sealed closure to the open end of the can. The cover includes an integrally formed current collector portion that contacts one end of the inner electrode. The cover serves as a current collector and also serves as a contact terminal of the cell.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: August 7, 2012
    Assignee: Eveready Battery Company, Inc.
    Inventors: Ning Cui, Urs Krebs, Peter R. Tsai
  • Electrochemical cell
    Patent number: 7556888
    Abstract: A cylindrical alkaline electrochemical cell is disclosed that includes a gel free anode. The anode includes a free flowing zinc powder with a preassembly tap density between 1.6 g/cc and 2.9 g/cc. In one embodiment, zinc powder with the desired tap density may be obtained by mixing zinc agglomerates with zinc flakes.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: July 7, 2009
    Assignee: Eveready Battery Company, Inc.
    Inventors: Ning Cui, Peter R. Tsai
  • ELECTROCHEMICAL CELL HAVING LOW VOLUME COLLECTOR ASSEMBLY
    Publication number: 20080241678
    Abstract: A low volume collector assembly and an electrochemical cell employing a collector assembly are provided. The electrochemical cell includes an electrically conductive can having inner and outer electrodes disposed therein. The cell also includes a collector assembly assembled to an open end of the can to provide closure to the open end of the can. The collector assembly includes a seal and a cover assembled to the seal to provide a sealed closure to the open end of the can. The cover includes an integrally formed current collector portion that contacts one end of the inner electrode. The cover serves as a current collector and also serves as a contact terminal of the cell.
    Type: Application
    Filed: March 27, 2007
    Publication date: October 2, 2008
    Inventors: Ning Cui, Urs Krebs, Peter R. Tsai