Patents by Inventor Duane James

Duane James 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).

  • Lithium-iron disulfide cell design
    Patent number: 9325018
    Abstract: The invention relates to primary electrochemical cells, in addition to methods for manufacturing and discharging the same, having a jellyroll electrode assembly that includes a positive electrode with a coating comprising iron disulfide deposited on a current collector situated on the outermost circumference of the jellyroll, a lithium-based negative electrode and a polymeric separator. More particularly, the invention relates to a cell design which optimizes cell capacity and substantially eliminates premature voltage drop-off on intermittent service testing by eliminating the edge effect through, for example, deliberately relieving stack pressure and/or extending the distance lithium ions proximate to the terminal end of the positive electrode must travel to undergo an electrochemical reaction in that region.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: April 26, 2016
    Assignee: ENERGIZER BRANDS, LLC
    Inventors: Jack W. Marple, Duane James, Weiwei Huang
  • High-capacity and high-reliability lithium iron disulfide cell designs and methods for making the same
    Patent number: 8859146
    Abstract: The invention relates to primary electrochemical cells, in addition to methods for manufacturing and discharging the same, having a jellyroll electrode assembly that includes a positive electrode with a coating comprising iron disulfide deposited on a current collector situated on the outermost circumference of the jellyroll, a lithium-based negative electrode and a polymeric separator. More particularly, the invention relates to a cell design which optimizes cell capacity and substantially eliminates premature voltage drop-off on intermittent service testing by eliminating the edge effect through, for example, deliberately relieving stack pressure and/or extending the distance lithium ions proximate to the terminal end of the positive electrode must travel to undergo an electrochemical reaction in that region.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 14, 2014
    Assignee: Eveready Battery Company, Inc.
    Inventors: Jack W. Marple, Duane James, Weiwei Huang
  • Lithium-Iron Disulfide Cell Design
    Publication number: 20140283377
    Abstract: The invention relates to primary electrochemical cells, in addition to methods for manufacturing and discharging the same, having a jellyroll electrode assembly that includes a positive electrode with a coating comprising iron disulfide deposited on a current collector situated on the outermost circumference of the jellyroll, a lithium-based negative electrode and a polymeric separator. More particularly, the invention relates to a cell design which optimizes cell capacity and substantially eliminates premature voltage drop-off on intermittent service testing by eliminating the edge effect through, for example, deliberately relieving stack pressure and/or extending the distance lithium ions proximate to the terminal end of the positive electrode must travel to undergo an electrochemical reaction in that region.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: Jack W. Marple, Duane James, Weiwei Huang
  • Lithium-Iron Disulfide Cell Design
    Publication number: 20120251860
    Abstract: The invention relates to primary electrochemical cells, in addition to methods for manufacturing and discharging the same, having a jellyroll electrode assembly that includes a positive electrode with a coating comprising iron disulfide deposited on a current collector situated on the outermost circumference of the jellyroll, a lithium-based negative electrode and a polymeric separator. More particularly, the invention relates to a cell design which optimizes cell capacity and substantially eliminates premature voltage drop-off on intermittent service testing by eliminating the edge effect through, for example, deliberately relieving stack pressure and/or extending the distance lithium ions proximate to the terminal end of the positive electrode must travel to undergo an electrochemical reaction in that region.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Applicant: EVEREADY BATTERY COMPANY, INC.
    Inventors: Jack W. Marple, Duane James, Weiwei Huang