Patents by Inventor Kyohei YAMATO

Kyohei YAMATO 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: 20210087713
    Abstract: The present invention relates to a method for producing fine hydrophobically modified cellulose fibers wherein anionic group-containing anionically modified cellulose fibers are bound to a modifying group, the method including subjecting hydrophobically modified cellulose fibers having an average fiber length of 1 ?m or more and 1,000 ?m or less to a finely pulverizing treatment in an organic solvent. The fine hydrophobically modified cellulose fibers obtained by the method for production of the present invention can be suitably used in various resin manufactured articles for daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and various industrial applications such as automobile parts.
    Type: Application
    Filed: December 21, 2018
    Publication date: March 25, 2021
    Applicant: Kao Corporation
    Inventors: Shunsuke FUKUI, Yutaka YOSHIDA, Kyohei YAMATO, Ryohta YAMAMOTO
  • Publication number: 20210054541
    Abstract: A method for producing shortened anionically modified cellulose fibers having an average fiber length of 1 ?m or more and 500 ?m or less, the method including cleaving sugar chains of anionically modified cellulose fibers by thermal decomposition under temperature conditions of 50° C. or higher and 230° C. or lower, wherein the average fiber length of the anionically modified cellulose fibers is 700 ?m or more and 10000 ?m or less. By the use of shortened anionically modified cellulose fibers or the like obtained by the method for production of the present invention, a dispersion containing fine cellulose fibers having a low viscosity and excellent handling property can be prepared while at a high concentration, so that the dispersion can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, packaging materials for household electric appliances, automobile parts, and materials for three-dimensional modeling.
    Type: Application
    Filed: June 6, 2019
    Publication date: February 25, 2021
    Applicant: KAO CORPORATION
    Inventors: Shunsuke FUKUI, Yutaka YOSHIDA, Kyohei YAMATO, Junnosuke SAITO, Takuya MORIOKA, Tadanori YOSHIMURA, Takuma TSUBOI
  • Patent number: 10781552
    Abstract: A fine cellulose fiber composite containing fine cellulose fibers and a polymer having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety or a propylene oxide (PO) polymer moiety, the fine cellulose fibers being connected with the polymer via an amide bond. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably used as various fillers, and the like. Also, the resin composition of the present invention containing a dispersion of the fine cellulose fiber composite can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and automobile parts.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 22, 2020
    Assignee: KAO CORPORATION
    Inventors: Kyohei Yamato, Yoshiaki Kumamoto
  • Publication number: 20190225712
    Abstract: A fine cellulose fiber composite in which a modifying group is bound to a carboxy group of fine cellulose fibers, the fine cellulose fibers having a carboxy group content of 0.1 mmol/g or more, wherein the fine cellulose fiber composite has an average aspect ratio of 1 or more and 150 or less; and a resin composition containing the fine cellulose fiber composite and a resin. The resin composition containing a fine cellulose fiber composite of the present invention has excellent heat resistance, and the molded article of this resin composition has excellent mechanical strength, heat resistance, and dimensional stability. Accordingly, the present invention can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and automobile parts.
    Type: Application
    Filed: August 4, 2017
    Publication date: July 25, 2019
    Applicant: KAO CORPORATION
    Inventors: Kyohei YAMATO, Yutaka YOSHIDA
  • Publication number: 20190194831
    Abstract: A fine cellulose fiber composite containing fine cellulose fibers having a carboxy group and an amine having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety, the fine cellulose fibers being bound with the amine at the carboxy group to form a salt, wherein the fine cellulose fibers have a carboxy group content of 0.1 mmol/g or more, and wherein the molecular weight of the EO/PO copolymer moiety is from 700 to 10,000, and wherein a PO content ratio in the EO/PO copolymer moiety is from 1 to 70% by mol. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably as various fillers, and the like.
    Type: Application
    Filed: March 1, 2019
    Publication date: June 27, 2019
    Applicant: KAO CORPORATION
    Inventors: Kyohei YAMATO, Yoshiaki KUMAMOTO
  • Patent number: 10266968
    Abstract: A fine cellulose fiber composite containing fine cellulose fibers having a carboxy group and an amine having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety, the fine cellulose fibers being bound with the amine at the carboxy group to form a salt, wherein the fine cellulose fibers have a carboxy group content of 0.1 mmol/g or more, and wherein the molecular weight of the EO/PO copolymer moiety is from 700 to 10,000, and wherein a PO content ratio in the EO/PO copolymer moiety is from 1 to 70% by mol. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably as various fillers, and the like.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 23, 2019
    Assignee: KAO CORPORATION
    Inventors: Kyohei Yamato, Yoshiaki Kumamoto
  • Publication number: 20160340827
    Abstract: A fine cellulose fiber composite containing fine cellulose fibers and a polymer having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety or a propylene oxide (PO) polymer moiety, the fine cellulose fibers being connected with the polymer via an amide bond. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably used as various fillers, and the like. Also, the resin composition of the present invention containing a dispersion of the fine cellulose fiber composite can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and automobile parts.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 24, 2016
    Applicant: KAO CORPORATION
    Inventors: Kyohei YAMATO, Yoshiaki KUMAMOTO
  • Publication number: 20160319467
    Abstract: A fine cellulose fiber composite containing fine cellulose fibers having a carboxy group and an amine having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety, the fine cellulose fibers being bound with the amine at the carboxy group to form a salt, wherein the fine cellulose fibers have a carboxy group content of 0.1 mmol/g or more, and wherein the molecular weight of the EO/PO copolymer moiety is from 700 to 10,000, and wherein a PO content ratio in the EO/PO copolymer moiety is from 1 to 70% by mol. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably as various fillers, and the like.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 3, 2016
    Applicant: KAO CORPORATION
    Inventors: Kyohei YAMATO, Yoshiaki KUMAMOTO