Patents by Inventor Takumi SUGANE

Takumi SUGANE 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, OPTICAL FIBER TAPE CORE WIRE, AND OPTICAL FIBER CABLE
    Publication number: 20230358949
    Abstract: An optical fiber includes: a core portion made of glass; a side core layer made of glass and enclosing the core portion; a cladding portion made of glass and enclosing the side core layer; and a coating layer including a primary layer made of resin and enclosing the cladding portion, and a secondary layer made of resin and enclosing the primary layer. The relationships ?1>?Clad>?2 and 0>?2 are satisfied where ?1 represents relative refractive-index difference of average maximum refractive index of the core portion with respect to average refractive index of the cladding portion, ?2 represents relative refractive-index difference of average refractive index of the side core layer with respect to average refractive index of the cladding portion, and ?Clad represents relative refractive-index difference of average refractive index of the cladding portion with respect to refractive index of pure silica glass.
    Type: Application
    Filed: July 17, 2023
    Publication date: November 9, 2023
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kazunori MUKASA, Minoru KASAHARA, Keiichi AISO, Yukihiro TSUCHIDA, Naoya YOMOGITA, Takumi SUGANE, Ichihiko SUGANUMA, Tomoaki GONOHE, Mitsuhiro IWAYA, Zoltan VARALLYAY, Tamas MIHALFFY