Patents by Inventor Denis D. Carpenter

Denis D. Carpenter 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).

  • Metal air cathode manganese oxide contained in octahedral molecular sieve
    Patent number: 9136540
    Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 15, 2015
    Assignee: SPECTRUM BRANDS, INC.
    Inventors: Akshaya Kumar Padhi, Denis D. Carpenter, Jeffrey A. Poirier
  • Metal air cathode: manganese oxide contained in octahedral molecular sieve
    Patent number: 8974964
    Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: March 10, 2015
    Assignee: Spectrum Brands, Inc.
    Inventors: Akshaya Kumar Padhi, Denis D. Carpenter, Jeffrey A. Poirier
  • NOVEL METAL AIR CATHODE MANGANESE OXIDE CONTAINED IN OCTAHEDRAL MOLECULAR SIEVE
    Publication number: 20110070487
    Abstract: An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 24, 2011
    Applicant: ROVCAL, INC.
    Inventors: Akshaya Kumar Padhi, Denis D. Carpenter, Jeffrey A. Poirier
  • Electrochemical cell having improved radial seal
    Patent number: 7651814
    Abstract: An electrochemical cell is provided having a cathode can that fits over an anode can to define an anode cavity for retaining active anode material. A cathode assembly is disposed proximal the base of the anode can, and is separated from the anode cavity via a separator. A radial seal is provided at the remote region between the outer periphery of the anode side wall and cathode side wall to prevent the leakage of electrolyte material. An insulator is disposed between the anode and cathode to provide electrical insulation therebetween.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: January 26, 2010
    Assignee: Rovcal, Inc.
    Inventors: Thomas P. Anderson, William C. Bushong, Denis D. Carpenter, Aaron J. Rositch, Marc L. Syvertsen, Bruce Weldum, Thomas M. Kaufman
  • Seal tab for a metal-air electrochemical cell
    Patent number: 4649090
    Abstract: A seal tab consisting of an acrylic adhesive applied to a biaxially-oriented three-ply synthetic paper of polypropylene is used as a sealing means for metal-air electrochemical cells, and batteries constructed thereof. The seal tabs prevent loss of rate capability and capacity due to interactions with the surrounding environment prior to the placement into service of metal air cells, yet without so isolating the cells such that the initial open circuit voltage is deemed unacceptable by the end user. Additionally, the seal tab, as provided, is easily and cleanly removed, which enhances the cell's consumer appeal.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: March 10, 1987
    Assignee: Rayovac Corporation
    Inventors: John E. Oltman, Robert B. Dopp, Denis D. Carpenter
  • Metal-air cathode button cell
    Patent number: 4591539
    Abstract: A button cell having an air cathode assembly wherein grooves are constructed between the cathode and cell container to provide a gas diffusion passage from a port extending through the container to the face of the air cathode.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: May 27, 1986
    Assignee: Rayovac Corporation
    Inventors: John E. Oltman, Denis D. Carpenter, Robert B. Dopp