Patents by Inventor Kei KAIZUKA

Kei KAIZUKA 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).

  • Undersea cable, multilayer tape for water shielding layer of undersea cable, and method for improving fatigue characteristics of undersea cable
    Patent number: 9006574
    Abstract: A power line core in an undersea cable includes a conducting member, an insulating member, a shield layer, a water shielding layer, an anticorrosion layer and the like. The insulating member is provided on an outer periphery portion of the conducting member. The insulating member is made of, for example, crosslinked polyethylene. The shield layer is provided on an outer periphery of the insulating member. The water shielding layer is provided on an outer periphery portion of the shield layer. The water shielding layer includes a multilayer tape in which a metal layer is sandwiched by resin layers. The anticorrosion layer is provided on an outer periphery portion of the water shielding layer. In the cross section of the multilayer tape, the metal layer has a corrugated shape.
    Type: Grant
    Filed: February 23, 2014
    Date of Patent: April 14, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Toru Kagoura, Kenichi Ishii, Kei Kaizuka, Takuzo Hagiwara
  • UNDERSEA CABLE, MULTILAYER TAPE FOR WATER SHIELDING LAYER OF UNDERSEA CABLE, AND METHOD FOR IMPROVING FATIGUE CHARACTERISTICS OF UNDERSEA CABLE
    Publication number: 20140166335
    Abstract: A power line core in an undersea cable includes a conducting member, an insulating member, a shield layer, a water shielding layer, an anticorrosion layer and the like. The insulating member is provided on an outer periphery portion of the conducting member. The insulating member is made of, for example, crosslinked polyethylene. The shield layer is provided on an outer periphery of the insulating member. The water shielding layer is provided on an outer periphery portion of the shield layer. The water shielding layer includes a multilayer tape in which a metal layer is sandwiched by resin layers. The anticorrosion layer is provided on an outer periphery portion of the water shielding layer. In the cross section of the multilayer tape, the metal layer has a corrugated shape.
    Type: Application
    Filed: February 23, 2014
    Publication date: June 19, 2014
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Toru KAGOURA, Kenichi ISHII, Kei KAIZUKA, Takuzo HAGIWARA