Patents by Inventor Shu Shimamoto

Shu Shimamoto 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).

  • 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
  • Patent number: 10889916
    Abstract: Provided are a cellulose acetate fiber and a cellulose acetate fiber molded article which are excellent in water solubility and biodegradability and are small in load onto the natural environment even when allowed to stand still in the environment. The invention provides a cellulose acetate fiber containing cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.3 and a compositional distribution index (CDI) of 2.0 or less as well as a cellulose acetate fiber molded article.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: January 12, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Shizuka Okada, Hiroki Taniguchi, Toshikazu Nakamura
  • Patent number: 10869883
    Abstract: A nutrient composition contains a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may have a compositional distribution index (CDI) of 2.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents the half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and [Math. 1] the theoretical value of half height width of chemical composition =2.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: December 22, 2020
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Toshikazu Nakamura, Shizuka Ukita, Tsuyoshi Nakamura, Ryoko Yamauchi, Hiroshi Kobayashi
  • Publication number: 20200288762
    Abstract: Object of the present invention is to provide an intestinal immune-enhancing agent that can sufficiently increase IgA in the intestinal tract with a low dose while maintaining an increased amount of IgA for an extended period of time. Provided is an intestinal immune-enhancing agent containing a cellulose acetate that has a total degree of acetyl substitution from 0.4 to 1.1.
    Type: Application
    Filed: October 23, 2018
    Publication date: September 17, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Tadashi TAKEUCHI, Eiji MIYAUCHI, Shu SHIMAMOTO, Akinobu MATSUYAMA, Hiroshi OHNO
  • Patent number: 10703825
    Abstract: A cellulose acetate according to the present invention has a total degree of acetyl substitution of 0.4 to 1.1 and has a compositional distribution index (CDI) of 3.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition is a half height width of chemical composition determined by analyzing a cellulose acetate propionate by HPLC, where the cellulose acetate propionate is prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and Theoretical value of half height width of chemical composition=2·35482?{square root over (3*DPw*(DS/3)*(1?DS/3))}/DPw??[Math.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: July 7, 2020
    Assignee: DAICEL CORPORATION
    Inventors: Shizuka Ukita, Hiroki Taniguchi, Shu Shimamoto, Toshikazu Nakamura
  • Patent number: 10442870
    Abstract: Provided is a novel cellulose derivative having excellent water resistance. This is a cellulose acylate oxoalkanoate which is a cellulose derivative corresponding to cellulose, except with substituents replacing part or all of hydrogen atoms in the hydroxy groups of the cellulose. The substituents includes a group represented by General Formula (1) and a group represented by General Formula (2). The cellulose acylate oxoalkanoate has a degree x of substitution with the group represented by General Formula (1), a degree y of substitution with the group represented by General Formula (2), and a degree z of unsubstitution, where x, y, and z meet conditions specified by Expressions (A), (B), and (C): 0.1?x?2.99??(A) 0.01?y?2.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: October 15, 2019
    Assignee: DAICEL CORPORATION
    Inventors: Tomohiro Hashizume, Shizuka Ukita, Shu Shimamoto, Toshikazu Nakamura
  • Patent number: 10300085
    Abstract: A nutrient composition, a lipid metabolism-improving agent, and prophylactic and/or therapeutic agents typically for inflammatory bowel diseases, immune disorders, cancers, non-alcoholic steatohepatitis, obesity, diabetes, and hypercholesterolemia each contain a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may be one having a compositional distribution index (CDI) of 2.0 or less, where the CDI is defined by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents a half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample), and the theoretical value of half height width of chemical composition =2.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 28, 2019
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Toshikazu Nakamura, Shizuka Ukita, Tsuyoshi Nakamura, Ryoko Yamauchi, Hiroshi Kobayashi, Tatsuya Morita, Tomomi Genda
  • Publication number: 20190151349
    Abstract: A nutrient composition contains a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may have a compositional distribution index (CDI) of 2.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents the half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and [Math. 1] the theoretical value of half height width of chemical composition =2.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Applicant: DAICEL CORPORATION
    Inventors: Shu SHIMAMOTO, Toshikazu NAKAMURA, Shizuka UKITA, Tsuyoshi NAKAMURA, Ryoko YAMAUCHI, Hiroshi KOBAYASHI
  • 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: 10188675
    Abstract: A nutrient composition contains a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may have a compositional distribution index (CDI) of 2.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents the half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and the theoretical value of half height width of chemical composition=2.35482?{square root over (3*DPw*(DS/3)*(1?DS/3))}/DPw??[Math.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: January 29, 2019
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Toshikazu Nakamura, Shizuka Ukita, Tsuyoshi Nakamura, Ryoko Yamauchi, Hiroshi Kobayashi
  • Patent number: 9796920
    Abstract: Disclosed herein is a quantum dot composite that can maintain luminous efficiency per unit quantum dot even when a quantum dot concentration is high, and therefore can achieve a high emission intensity. The quantum dot composite includes: a matrix; and quantum dots dispersed in the matrix, wherein the matrix is composed of cellulose acetate having a compositional distribution index (CDI) of 3.0 or less, and a concentration of the quantum dots is 0.05 wt % or higher.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: October 24, 2017
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Toshikazu Nakamura
  • Publication number: 20170100426
    Abstract: A nutrient composition, a lipid metabolism-improving agent, and prophylactic and/or therapeutic agents typically for inflammatory bowel diseases, immune disorders, cancers, non-alcoholic steatohepatitis, obesity, diabetes, and hypercholesterolemia each contain a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may be one having a compositional distribution index (CDI) of 2.0 or less, where the CDI is defined by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents a half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample), and the theoretical value of half height width of chemical composition=2.
    Type: Application
    Filed: March 20, 2015
    Publication date: April 13, 2017
    Applicant: DAICEL CORPORATION
    Inventors: Shu SHIMAMOTO, Toshikazu NAKAMURA, Shizuka UKITA, Tsuyoshi NAKAMURA, Ryoko YAMAUCHI, Hiroshi KOBAYASHI, Tatsuya MORITA, Tomomi GENDA
  • Publication number: 20170088636
    Abstract: Provided is a novel cellulose derivative having excellent water resistance. This is a cellulose acylate oxoalkanoate which is a cellulose derivative corresponding to cellulose, except with substituents replacing part or all of hydrogen atoms in the hydroxy groups of the cellulose. The substituents includes a group represented by General Formula (1) and a group represented by General Formula (2). The cellulose acylate oxoalkanoate has a degree x of substitution with the group represented by General Formula (1), a degree y of substitution with the group represented by General Formula (2), and a degree z of unsubstitution, where x, y, and z meet conditions specified by Expressions (A), (B), and (C): 0.1?x?2.99??(A) 0.01?y?2.
    Type: Application
    Filed: March 19, 2014
    Publication date: March 30, 2017
    Applicant: DAICEL CORPORATION
    Inventors: Tomohiro HASHIZUME, Shizuka UKITA, Shu SHIMAMOTO, Toshikazu NAKAMURA
  • Patent number: 9595366
    Abstract: Problem to be Solved It is intended to provide a conductive resin composition that exhibits high conductivity even without being supplemented with a special resin or a third component, and a molded article obtained from the resin composition. Solution The conductive cellulose-based resin composition of the present invention comprises (A) an aliphatic cellulose ester and (B) at least one carbon material selected from the group consisting of a single-walled carbon nanotube, a multi-walled carbon nanotube, single-layer graphene, multi-layer graphene, fullerene, and carbon black. The volume resistivity of this conductive cellulose-based resin composition is, for example, 10?3 to 20 ?·cm, preferably 10?3 to 1 ?·cm. The content of the carbon material (B) is, for example, 0.5 to 80% by weight of the whole conductive cellulose-based resin composition.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: March 14, 2017
    Assignee: DAICEL CORPORATION
    Inventors: Toshikazu Nakamura, Shu Shimamoto, Shizuka Okada
  • Patent number: 9543057
    Abstract: The conductive cellulose-based resin composition of the present invention comprises (A) a cellulose acetate ester having a total degree of acetyl substitution of 0.5 to 1.1 and (B) at least one carbon material selected from the group consisting of single-walled carbon nanotube, multi-walled carbon nanotube, single-layer graphene, multi-layer graphene, fullerene, and carbon black. This conductive cellulose resin composition exhibits high conductivity even without being supplemented with a special resin or a third component. Also, the conductive cellulose-based resin composition can be easily molded in an aqueous system.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: January 10, 2017
    Assignee: DAICEL CORPORATION
    Inventors: Toshikazu Nakamura, Shu Shimamoto, Shizuka Okada, Hiroki Taniguchi
  • Publication number: 20160347996
    Abstract: Disclosed herein is a quantum dot composite that can maintain luminous efficiency per unit quantum dot even when a quantum dot concentration is high, and therefore can achieve a high emission intensity. The quantum dot composite includes: a matrix; and quantum dots dispersed in the matrix, wherein the matrix is composed of cellulose acetate having a compositional distribution index (CDI) of 3.0 or less, and a concentration of the quantum dots is 0.05 wt % or higher.
    Type: Application
    Filed: January 29, 2014
    Publication date: December 1, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Shu SHIMAMOTO, Toshikazu NAKAMURA
  • Publication number: 20160333500
    Abstract: Provided are a cellulose acetate fiber and a cellulose acetate fiber molded article which are excellent in water solubility and biodegradability and are small in load onto the natural environment even when allowed to stand still in the environment. The invention provides a cellulose acetate fiber containing cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.3 and a compositional distribution index (CDI) of 2.0 or less as well as a cellulose acetate fiber molded article.
    Type: Application
    Filed: January 15, 2014
    Publication date: November 17, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Shu SHIMAMOTO, Shizuka OKADA, Hiroki TANIGUCHI, Toshikazu NAKAMURA
  • Publication number: 20160317568
    Abstract: A nutrient composition contains a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may have a compositional distribution index (CDI) of 2.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition represents the half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and the theoretical value of half height width of chemical composition=2.35482?{square root over (3*DPw*(DS/3)*(1?DS/3))}/DPw??[Math.
    Type: Application
    Filed: March 24, 2014
    Publication date: November 3, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Shu SHIMAMOTO, Toshikazu NAKAMURA, Shizuka UKITA, Tsuyoshi NAKAMURA, Ryoko YAMAUCHI, Hiroshi KOBAYASHI
  • Publication number: 20160032020
    Abstract: A cellulose acetate according to the present invention has a total degree of acetyl substitution of 0.4 to 1.1 and has a compositional distribution index (CDI) of 3.0 or less, where the CDI is specified by the formula: CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition) where the measured value of half height width of chemical composition is a half height width of chemical composition determined by analyzing a cellulose acetate propionate by HPLC, where the cellulose acetate propionate is prepared by propionylating all residual hydroxy groups of the cellulose acetate (sample); and Theoretical value of half height width of chemical composition=2·35482?{square root over (3*DPw*(DS/3)*(1?DS/3))}{square root over (3*DPw*(DS/3)*(1?DS/3))}/DPw??[Math.
    Type: Application
    Filed: March 12, 2014
    Publication date: February 4, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Shizuka UKITA, Hiroki TANIGUCHI, Shu SHIMAMOTO, Toshikazu NAKAMURA
  • Patent number: 9217043
    Abstract: Provided is a process for obtaining solid cellulose, such as a cellulose solidified article or cellulose shaped article, from a cellulose solution without causing discharge of large amounts of waste liquids and environmental issues such as large energy consumption. The process produces solid cellulose through the steps of (A) dissolving cellulose in a solvent (s1) to give a cellulose solution, where the solvent (s1) includes at least one onium hydroxide in a content of from 45 to 85 percent by weight and water in a content of from 15 to 55 percent by weight, and the at least one onium hydroxide is selected from the group consisting of quaternary phosphonium hydroxides and quaternary ammonium hydroxides; (B) bringing the cellulose solution into contact with a poor solvent (s2) to precipitate cellulose as a cellulose solidified article; and (C) separating and collecting the cellulose solidified article.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: December 22, 2015
    Assignee: DAICEL CORPORATION
    Inventors: Shu Shimamoto, Hiroyuki Ohno