Patents by Inventor Yusuke Yamaki

Yusuke Yamaki 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).

  • Patent number: 11028257
    Abstract: A flame-retardant resin composition may include a base resin composed of polyethylene and an acid-modified polyolefin, a silicone compound, a fatty acid-containing compound, and a hindered amine-based compound that includes a hindered amine structure. The polyethylene may include a high-density polyethylene, a medium-density polyethylene and a low-density polyethylene, where the high-density polyethylene has a density of 945 kg/m3 or more, the medium-density polyethylene has a density of 914 kg/m3 or more and less than 945 kg/m3, and the low-density polyethylene has a density of 864 kg/m3 or more and less than 914 kg/m3. The base resin may contain the high-density polyethylene in an amount of 40 mass % or more and 60 mass % or less, the medium-density polyethylene in an amount of 1 mass % or more and 35 mass % or less, and the low-density polyethylene in an amount of 10 mass % or more and 30 mass % or less.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: June 8, 2021
    Assignee: Fujikura Ltd.
    Inventors: Yusuke Yamaki, Shoichiro Nakamura
  • Publication number: 20210061985
    Abstract: Provided is a flame retardant resin composition that includes a base resin, a filler blended in a ratio of 5 parts by mass or more relative to 100 parts by mass of the base resin, a silicone compound blended in a ratio of 0.5 part by mass or more relative to 100 parts by mass of the base resin, and a fatty acid-containing compound blended in a ratio of 3 parts by mass or more relative to 100 parts by mass of the base resin. The filler may have a silane coupling agent having a polar group adhered to at least a part of a surface of a silicate compound. Further provided are an insulated wire, a cable, and an optical fiber cable that includes in part the flame retardant resin composition.
    Type: Application
    Filed: March 14, 2019
    Publication date: March 4, 2021
    Applicant: Fujikura Ltd.
    Inventors: Masayuki Iwata, Yusuke Yamaki, Shoichiro Nakamura
  • Publication number: 20200062937
    Abstract: A flame-retardant resin composition may include a base resin composed of polyethylene and an acid-modified polyolefin, a silicone compound, a fatty acid-containing compound, and a hindered amine-based compound that includes a hindered amine structure. The polyethylene may include a high-density polyethylene, a medium-density polyethylene and a low-density polyethylene, where the high-density polyethylene has a density of 945 kg/m3 or more, the medium-density polyethylene has a density of 914 kg/m3 or more and less than 945 kg/m3, and the low-density polyethylene has a density of 864 kg/m3 or more and less than 914 kg/m3. The base resin may contain the high-density polyethylene in an amount of 40 mass % or more and 60 mass % or less, the medium-density polyethylene in an amount of 1 mass % or more and 35 mass % or less, and the low-density polyethylene in an amount of 10 mass % or more and 30 mass % or less.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 27, 2020
    Applicant: FUJIKURA LTD.
    Inventors: Yusuke Yamaki, Shoichiro Nakamura