Patents by Inventor Mitsuru Iwano

Mitsuru Iwano 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).

  • Optical fiber cable
    Patent number: 8412011
    Abstract: It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber 1, tension members 6 and a sheath 3. The sheath 3 has a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiber 1 to an outer surface of the sheath 3 of greater than 0.3 mm. Further, in the cable, the surface of sheath 3 has a coefficient of friction of 0.45 or less and the sheath 3 has a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: April 2, 2013
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Tetsuya Yasutomi, Masayoshi Tsukamoto, Mitsuru Iwano, Yoshihisa Rintsu, Masanobu Aragaki, Masaki Nishiguchi
  • OPTICAL FIBER CABLE
    Publication number: 20100322573
    Abstract: It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber 1, tension members 6 and a sheath 3. The sheath 3 has a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiber 1 to an outer surface of the sheath 3 of greater than 0.3 mm. Further, in the cable, the surface of sheath 3 has a coefficient of friction of 0.45 or less and the sheath 3 has a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.
    Type: Application
    Filed: August 6, 2010
    Publication date: December 23, 2010
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tetsuya YASUTOMI, Masayoshi Tsukamoto, Mitsuru Iwano, Yoshihisa Rintsu, Masanobu Aragaki, Masaki Nishiguchi
  • Optical fiber cable
    Patent number: 7813606
    Abstract: It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber 1, tension members 6 and a sheath 3. The sheath 3 has a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiber 1 to an outer surface of the sheath 3 of greater than 0.3 mm. Further, in the cable, the surface of sheath 3 has a coefficient of friction of 0.45 or less and the sheath 3 has a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: October 12, 2010
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Tetsuya Yasutomi, Masayoshi Tsukamoto, Mitsuru Iwano, Yoshihisa Rintsu, Masanobu Aragaki, Masaki Nishiguchi
  • OPTICAL FIBER CABLE
    Publication number: 20090034922
    Abstract: It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber 1, tension members 6 and a sheath 3. The sheath 3 has a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiber 1 to an outer surface of the sheath 3 of greater than 0.3 mm. Further, in the cable, the surface of sheath 3 has a coefficient of friction of 0.45 or less and the sheath 3 has a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.
    Type: Application
    Filed: October 9, 2008
    Publication date: February 5, 2009
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tetsuya YASUTOMI, Masayoshi Tsukamoto, Mitsuru Iwano, Yoshihisa Rintsu, Masanobu Aragaki, Masaki Nishiguchi