Patents by Inventor David Walter Kalisz

David Walter Kalisz 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 separator
    Patent number: 11108116
    Abstract: The discharge performance of a primary, bobbin-style electrochemical cell is improved by incorporating a separator formed from a continuous separator sheet defining a two-layer cylindrical sidewall and a closed bottom end between the included electrochemical cell cathode and anode. A first layer of the cylindrical separator is formed by rolling a first end of a continuous separator sheet into a cylinder having a central axis parallel with a longitudinal axis of the continuous separator sheet, and then rolling a second end of the continuous separator sheet around the exterior of the first cylindrical layer to form a second cylindrical layer. The closed bottom end is formed by a portion of the continuous separator sheet located between the rolled portion of the first end and the rolled portion of the second end.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: August 31, 2021
    Assignee: Energizer Brands, LLC
    Inventors: David Walter Kalisz, Maria G. Verikakis, Christopher S. Bolyos
  • ELECTROCHEMICAL CELL SEPARATOR
    Publication number: 20190393469
    Abstract: The discharge performance of a primary, bobbin-style electrochemical cell is improved by incorporating a separator formed from a continuous separator sheet defining a two-layer cylindrical sidewall and a closed bottom end between the included electrochemical cell cathode and anode. A first layer of the cylindrical separator is formed by rolling a first end of a continuous separator sheet into a cylinder having a central axis parallel with a longitudinal axis of the continuous separator sheet, and then rolling a second end of the continuous separator sheet around the exterior of the first cylindrical layer to form a second cylindrical layer. The closed bottom end is formed by a portion of the continuous separator sheet located between the rolled portion of the first end and the rolled portion of the second end.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 26, 2019
    Inventors: David Walter Kalisz, Maria G. Verikakis, Christopher S. Bolyos