Patents by Inventor Toru Mangahara

Toru Mangahara 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).

  • Publication number: 20230178712
    Abstract: A lead alloy is described that is capable of manufacturing a positive electrode for a lead storage battery with a reduced likelihood of causing growth. The lead alloy contains 0.4% by mass or more and 2% by mass or less of tin and 0.004% by mass or less of bismuth, with the balance being lead and inevitable impurities. The diffraction intensity of a Cube orientation {001} <100> in a pole figure created by analyzing the surface of the lead alloy by an X-ray diffraction method is 4 times or less the diffraction intensity of a random orientation in a pole figure created by analyzing a pure lead powder by the X-ray diffraction method.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 8, 2023
    Inventors: Hiroshi Kaneko, Yoshiaki Ogiwara, Miho Yamauchi, Akira Tanaka, Hideto Nakamura, Masanobu Aragaki, Jun Furukawa, Toru Mangahara, Keizo Yamada, Ayano Koide, Atsushi Sato
  • Publication number: 20230170464
    Abstract: A lead alloy is described that is capable of manufacturing a positive electrode for a lead storage battery less likely to cause corrosion penetrating through a lead layer for the positive electrode in the thickness direction. The lead alloy contains 0.4% by mass or more and 2% by mass less of tin and 0.004% by mass or less of bismuth, with the balance being lead and inevitable impurities. When image analysis of a crystal orientation distribution map created by analyzing the surface of the lead alloy by an electron backscatter diffraction method is performed, intersection points of misorientation boundaries between crystal grains with a crystal misorientation of 5° or more and a straight line extending in one specific direction are extracted. The distances between two adjacent intersection points among the extracted intersection points are measured, and the average value of the distances is 50 ?m or less.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 1, 2023
    Inventors: Hiroshi Kaneko, Yoshiaki Ogiwara, Miho Yamauchi, Akira Tanaka, Hideto Nakamura, Masanobu Aragaki, Jun Furukawa, Toru Mangahara, Keizo Yamada, Ayano Koide, Atsushi Sato
  • Patent number: 6048372
    Abstract: A method of producing an electrode plate used for a lithium secondary battery and a lithium secondary battery containing such an electrode plate. The electrode plate is produced by coating a coating slurry of an active material mixture agent added with oxalic acid on a collector, drying and pressing, so as to obtain an electrode plate improved in charge-discharge cycle characteristics when used in a lithium secondary battery.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: April 11, 2000
    Assignee: Furukawa Denchi Kabushiki Kaisha
    Inventors: Toru Mangahara, Satoshi Tanno, Akira Takamuku, Masahiro Yamamoto, Tomoki Kourakata, Hiroki Ohto
  • Patent number: 5846674
    Abstract: An electrode for a rechargeable battery with a nonaqueous electrolyte is provided wherein the active material layer has a sufficient flexibility, the adhesion between the active material coating and the metal foil collector is good, none of peeling, falling, cracking and other unfavorable phenomena occur in the active material coating in the step of assembling a battery and excellent discharge characteristics can be developed. The electrode for a rechargeable battery with a nonaqueous electrolyte comprises a metal foil collector and, formed on at least a part of the metal foil collector, an active material layer comprising an active material and a cured reaction-curing binder as essential components.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: December 8, 1998
    Assignees: Furukawa Denchi Kabushiki Kaisha, Dai Nippon Printing Co., Ltd.
    Inventors: Shigeru Sakai, Toru Mangahara, Kazuo Umeda, Kiyoshi Oguchi, Mitsuru Tsuchiya