Patents by Inventor Shoshi KATAKAI

Shoshi KATAKAI 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).

  • Non-ohmic composition and method for manufacturing same, cable interconnect unit and cable end-connect unit
    Patent number: 10840690
    Abstract: A tubular cable interconnect unit arranged on an outer periphery of a joint of a power cable, includes a tubular insulating tube, a non-ohmic resistor layer formed from a non-ohmic composition and provided on an inner peripheral surface of the insulating tube, and an inner semiconductive layer provided on the non-ohmic resistor layer, wherein the non-ohmic composition includes a base polymer including at least one of thermoplastic and rubber, and varistor grains having a non-ohmic characteristic in which a volume resistivity varies non-linearly with respect to an applied voltage, and the varistor grains have a maximum grain diameter of 30 ?m or less.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: November 17, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shuhei Yasuda, Takanori Yamazaki, Yoshiyuki Inoue, Ryota Fukumoto, Yoitsu Sekiguchi, Shoshi Katakai, Shinya Nishikawa, Hiroshi Hayami
  • NON-OHMIC COMPOSITION AND METHOD FOR MANUFACTURING SAME, CABLE INTERCONNECT UNIT AND CABLE END-CONNECT UNIT
    Publication number: 20200203942
    Abstract: A tubular cable interconnect unit arranged on an outer periphery of a joint of a power cable, includes a tubular insulating tube, a non-ohmic resistor layer formed from a non-ohmic composition and provided on an inner peripheral surface of the insulating tube, and an inner semiconductive layer provided on the non-ohmic resistor layer, wherein the non-ohmic composition includes a base polymer including at least one of thermoplastic and rubber, and varistor grains having a non-ohmic characteristic in which a volume resistivity varies non-linearly with respect to an applied voltage, and the varistor grains have a maximum grain diameter of 30 ?m or less.
    Type: Application
    Filed: June 11, 2018
    Publication date: June 25, 2020
    Inventors: Shuhei YASUDA, Takanori YAMAZAKI, Yoshiyuki INOUE, Ryota FUKUMOTO, Yoitsu SEKIGUCHI, Shoshi KATAKAI, Shinya NISHIKAWA, Hiroshi HAYAMI