Patents by Inventor Kazuki Yasuhara

Kazuki Yasuhara 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).

  • PRODUCTION METHOD FOR GI OPTICAL WAVEGUIDE
    Publication number: 20190338095
    Abstract: A production method for an optical waveguide including: a first step of inserting a needle-like portion at a tip end of an ejection unit into uncured cladding; a second step of moving the needle-like portion in the uncured cladding while ejecting an uncured material from the needle-like portion to form an uncured core surrounded and covered with the uncured cladding; a third step of removing the needle-like portion from the uncured cladding; and a fourth step of curing the uncured cladding and core, wherein the uncured cladding is composed of a composition including a reactive silicone compound composed of a polycondensate of a diarylsilicic acid compound of Formula [1] and an alkoxy silicon compound of Formula [2] Ar3—Si(OR1)aR23-a??[2], and a di(meth)acrylate compound of Formula [3] and the uncured core is composed of a composition including a reactive silicone compound and an aromatic vinyl compound of Formula [4]
    Type: Application
    Filed: October 21, 2016
    Publication date: November 7, 2019
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takaaki ISHIGURE, Sho YOSHIDA, Yuki SAITO, Kazuki YASUHARA, Takehiro NAGASAWA, Kentaro OHMORI
  • Production method for GI optical waveguide
    Patent number: 10465054
    Abstract: A production method for an optical waveguide including: a first step of inserting a needle-like portion at a tip end of an ejection unit into uncured cladding; a second step of moving the needle-like portion in the uncured cladding while ejecting an uncured material from the needle-like portion to form an uncured core surrounded and covered with the uncured cladding; a third step of removing the needle-like portion from the uncured cladding; and a fourth step of curing the uncured cladding and core, wherein the uncured cladding is composed of a composition including a reactive silicone compound composed of a polycondensate of a diarylsilicic acid compound of Formula [1] and an alkoxy silicon compound of Formula [2] Ar3—Si(OR1)aR23-a??[2] and a di(meth)acrylate compound of Formula [3] and the uncured core is composed of a composition including a reactive silicone compound and an aromatic vinyl compound of Formula [4]
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 5, 2019
    Assignee: NISSAN CHEMICAL CORPORATION
    Inventors: Takaaki Ishigure, Sho Yoshida, Yuki Saito, Kazuki Yasuhara, Takehiro Nagasawa, Kentaro Ohmori