Patents by Inventor Kunikazu Nagai

Kunikazu Nagai 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).

  • Alkaline battery, current collector, electrode, and method of manufacturing electrode
    Patent number: 7598001
    Abstract: An alkaline battery comprises an electrode. The electrode has a current collector and an active substance filled in the current collector. The current collector includes a nonwoven fabric fabricated from a plurality of fibers and a nickel-plating film formed on the plurality of fibers. A specific surface area per unit volume of the current collector is 0.13 m2/cm3-0.35 m2/cm3.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: October 6, 2009
    Assignees: Sanoh Industrial Co., Ltd., JEMCO Inc., Japan Vilene Company Ltd.
    Inventors: Kazuya Tsuda, Kunikazu Nagai, Hiroyuki Imai, Yoshitaka Mayuzumi, Kazuya Sato, Toshiaki Takase, Masanao Tanaka
  • Alkaline battery, current collector, electrode, and method of manufacturing electrode
    Publication number: 20050277025
    Abstract: An alkaline battery comprises an electrode. The electrode has a current collector and an active substance filled in the current collector. The current collector includes a nonwoven fabric fabricated from a plurality of fibers and a nickel-plating film formed on the plurality of fibers. A specific surface area per unit volume of the current collector is 0.13 m2/cm3-0.35 m2/cm3.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 15, 2005
    Inventors: Kazuya Tsuda, Kunikazu Nagai, Hiroyuki Imai, Yoshitaka Mayuzumi, Kazuya Sato, Toshiaki Takase, Masanao Tanaka
  • Positive electrode plate for nickel-hydrogen cell
    Patent number: 6537699
    Abstract: The positive electrode plate is a plate material which is formed by filling a foaming nickel substrate with a paste-like kneaded substance containing nickel hydroxide, and drying and pressure forming the substrate. The foaming nickel substrate is prepared by removing a plate foaming core material of urethane foam or the like after nickel-plating the foaming core material. First, the mass per unit area of nickel in the foaming nickel substrate is set to be 0.5 kg/m2 or more, so that the ohmic resistance of the foaming nickel substrate can be lower than those of conventional foaming nickel substrates. In addition, the upper limit of the mass per unit area of nickel in the foaming nickel substrate is set to be 1.1 kg/m2, so that it is possible to prevent the reduction of the energy density from exceeding the effect of the reduction of the ohmic resistance of the foaming nickel substrate.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 25, 2003
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Sanoh Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Suzuki, Kyoichi Ariga, Kunikazu Nagai