Patents by Inventor Naoki SAINOU

Naoki SAINOU 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).

  • WATER-SOLUBLE POLYMER COMPOSITION
    Publication number: 20230227649
    Abstract: The present invention provides a water-soluble polymer composition which is suppressed in decrease of the viscosity over time if formed into an aqueous solution that contains iron ions. A water-soluble polymer composition which contains a water-soluble polymer, a phenolic antioxidant and an inorganic salt other than a transition metal salt, wherein the content of the inorganic salt is from 0.001 part by mass to 10 parts by mass relative to 100 parts by mass of the water-soluble polymer.
    Type: Application
    Filed: May 27, 2021
    Publication date: July 20, 2023
    Inventors: Naoki SAINOU, Motoharu FUJISAKI
  • Polyrotaxane-containing composition
    Patent number: 10253140
    Abstract: The present invention aims to provide a polyrotaxane-containing composition having excellent transparency. The present invention relates to a polyrotaxane-containing composition including: a polyrotaxane that has a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups capping both ends of the linear molecule; and an alkyl (meth) acrylate that has a C4-C18 alkyl group, the polyrotaxane having at least one cyclic molecule that has a C4-C18 alkyl group.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: April 9, 2019
    Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.
    Inventors: Yusaku Masuhara, Naoki Sainou, Naoyuki Hashimoto
  • POLYROTAXANE-CONTAINING COMPOSITION
    Publication number: 20160229963
    Abstract: The present invention aims to provide a polyrotaxane-containing composition having excellent transparency. The present invention relates to a polyrotaxane-containing composition including: a polyrotaxane that has a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups capping both ends of the linear molecule; and an alkyl (meth) acrylate that has a C4-C18 alkyl group, the polyrotaxane having at least one cyclic molecule that has a C4-C18 alkyl group.
    Type: Application
    Filed: October 6, 2014
    Publication date: August 11, 2016
    Applicant: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Yusaku MASUHARA, Naoki SAINOU, Naoyuki HASHIMOTO