Patents by Inventor Yumi NAKAYAMA

Yumi NAKAYAMA 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).

  • DECORATIVE SHEET, DECORATIVE PLATE, AND INKJET INK FOR DECORATIVE SHEET
    Publication number: 20220282104
    Abstract: A decorative sheet and a decorative plate having both high luminance and high designability, and an inkjet ink for the decorative sheet used for producing the decorative sheet and the decorative plate. The decorative sheet according to an aspect of the present invention is provided with at least a lustrous layer which is an inkjet printed layer formed by using an inkjet ink on a base sheet, and the inkjet ink contains silver nanoparticles. The decorative plate according to an aspect of the present invention is provided with a decorative sheet and a substrate which is arranged on the side of the decorative sheet facing the substrate sheet. The inkjet ink for a decorative sheet according to an aspect of the present invention is an inkjet ink for a decorative sheet for forming a lustrous layer on a substrate sheet by an inkjet printing method, and contains silver nanoparticles.
    Type: Application
    Filed: May 24, 2022
    Publication date: September 8, 2022
    Applicant: TOPPAN INC.
    Inventors: Erika TABUCHI, Yasushi OOE, Yumi NAKAYAMA, Ayumi SHIODA
  • POLYCARBONATE-BASED RESIN, PRODUCTION METHOD THEREFOR, AND POLYCARBONATE-BASED RESIN COMPOSITION
    Publication number: 20210206967
    Abstract: Provided is a polycarbonate-based resin having a ratio of an amine terminal to all terminal groups of 1.0 mol % or more.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 8, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Koichi SUGA, Yumi NAKAYAMA, Aki YAMADA
  • Branched polycarbonate resin and method for producing same
    Patent number: 10239993
    Abstract: Provided is a branched polycarbonate resin, including a constituent unit represented by the general formula (I?).
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: March 26, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumi Nakayama, Koichi Suga, Yasuhiro Ishikawa
  • BRANCHED POLYCARBONATE RESIN AND METHOD FOR PRODUCING SAME
    Publication number: 20170321003
    Abstract: Provided is a branched polycarbonate resin, including a constituent unit represented by the general formula (I?).
    Type: Application
    Filed: October 27, 2015
    Publication date: November 9, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumi NAKAYAMA, Koichi SUGA, Yasuhiro ISHIKAWA
  • POLYCARBONATE RESIN FOR LIQUID CRYSTAL MEMBERS, POLYCARBONATE RESIN COMPOSITION FOR LIQUID CRYSTAL MEMBERS WHICH CONTAINS SAME, AND LIQUID CRYSTAL MEMBER
    Publication number: 20160083513
    Abstract: Provided is a polycarbonate resin for a liquid crystal member, which is produced by using an end terminator containing 3-pentadecylphenol obtained from a natural product, and which has a YI value of 1.1 or less or a light transmittance at a wavelength of 400 nm of 85% or more.
    Type: Application
    Filed: April 17, 2014
    Publication date: March 24, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Junpei MARUYAMA, Hironori TASHIRO, Toshifumi MIYAGAWA, Masayuki SHIBATA, Aki YAMADA, Koichi SUGA, Yumi NAKAYAMA