Patents by Inventor Yasumitsu Uraki

Yasumitsu Uraki 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: 11802166
    Abstract: An object of the present disclosure is to provide a cellulose acetate film having excellent bending properties and high transparency. The subject cellulose acetate film contains cellulose acetate having a cellulose triacetate I crystal structure, the cellulose acetate film having a light transmittance of 70% or higher at 660 nm.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: October 31, 2023
    Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, DAICEL CORPORATION
    Inventors: Yasumitsu Uraki, Haruo Konno, Shu Shimamoto
  • Patent number: 11525014
    Abstract: An object of the present invention is to provide cellulose acetate that has excellent compatibility with a resin, can reinforce a resin, and has excellent thermal stability. An embodiment of the present invention is cellulose acetate having a cellulose triacetate I crystal structure, wherein a temperature at which a weight loss relative to weight at 100° C. reaches 5% is 200° C. or higher when the cellulose acetate is heated at a heating rate of 10° C./min under a nitrogen atmosphere.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 13, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
    Inventors: Yasumitsu Uraki, Haruo Konno, Shu Shimamoto
  • Publication number: 20220135706
    Abstract: An object of the present disclosure is to provide a cellulose acetate film having excellent bending properties and high transparency. The subject cellulose acetate film contains cellulose acetate having a cellulose triacetate I crystal structure, the cellulose acetate film having a light transmittance of 70% or higher at 660 nm.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 5, 2022
    Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, DAICEL CORPORATION
    Inventors: Yasumitsu URAKI, Haruo KONNO, Shu SHIMAMOTO
  • Patent number: 11220763
    Abstract: Disclosed herein is cellulose acetate fibers that have an excellent affinity for resins and is capable of reinforcing resins. The cellulose acetate fibers have a cellulose triacetate I crystal structure and a number-average fiber diameter of 2 nm or more but 400 nm or less.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: January 11, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
    Inventors: Yasumitsu Uraki, Haruo Konno, Shu Shimamoto
  • Publication number: 20210221918
    Abstract: An object of the present invention is to provide cellulose acetate that has excellent compatibility with a resin, can reinforce a resin, and has excellent thermal stability. An embodiment of the present invention is cellulose acetate having a cellulose triacetate I crystal structure, wherein a temperature at which a weight loss relative to weight at 100° C. reaches 5% is 200° C. or higher when the cellulose acetate is heated at a heating rate of 10° C./min under a nitrogen atmosphere.
    Type: Application
    Filed: June 12, 2019
    Publication date: July 22, 2021
    Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
    Inventors: Yasumitsu URAKI, Haruo KONNO, Shu SHIMAMOTO
  • Publication number: 20190127889
    Abstract: Disclosed herein is cellulose acetate fibers that have an excellent affinity for resins and is capable of reinforcing resins. The cellulose acetate fibers have a cellulose triacetate I crystal structure and a number-average fiber diameter of 2 nm or more but 400 nm or less.
    Type: Application
    Filed: March 9, 2017
    Publication date: May 2, 2019
    Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
    Inventors: Yasumitsu URAKI, Haruo KONNO, Shu SHIMAMOTO
  • Patent number: 8911976
    Abstract: The invention relates to an enzyme stabilizer comprising a lignin derivative produced by reaction between lignin and a hydrophilic compound, and to a method of saccharifying lignocellulosic biomass which employs the enzyme stabilizer. According to the invention it is possible to accomplish effective saccharification of cellulosic biomass with saccharifying enzymes, by enhancing saccharifying enzyme activity and preventing nonspecific adsorption of saccharifying enzyme onto substrate.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: December 16, 2014
    Assignee: Forestry and Forest Products Research Institute
    Inventors: Yasumitsu Uraki, Harumi Honma, Tatsuhiko Yamada, Satoshi Kubo, Masanobu Nojiri
  • Publication number: 20120329100
    Abstract: The invention relates to an enzyme stabilizer comprising a lignin derivative produced by reaction between lignin and a hydrophilic compound, and to a method of saccharifying lignocellulosic biomass which employs the enzyme stabilizer. According to the invention it is possible to accomplish effective saccharification of cellulosic biomass with saccharifying enzymes, by enhancing saccharifying enzyme activity and preventing nonspecific adsorption of saccharifying enzyme onto substrate.
    Type: Application
    Filed: March 7, 2011
    Publication date: December 27, 2012
    Applicant: FORESTRY AND FOREST PRODUCTS RESEARCH INSTITUTE
    Inventors: Yasumitsu Uraki, Harumi Honma, Tatsuhiko Yamada, Satoshi Kubo, Masanobu Nojiri
  • Publication number: 20060083766
    Abstract: Anti-termite agent which comprises lignin or modified compound thereof as the active ingredient.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 20, 2006
    Inventors: Naonori Miyata, Shinichi Ogino, Makoto Ubukata, Yasumitsu Uraki