Patents by Inventor Jo OTSUKA

Jo OTSUKA 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: 20240387862
    Abstract: The present invention provides a slurry composition for all-solid-state battery production which can reduce gelation without neutralization with an acidic compound or a capital investment for a large-scale dry room or the like in the production of an all-solid-state battery using an alkali metal-containing inorganic powder, and which enables easy debinding of the binder resin and firing at relatively low temperature. The present invention also provides a method for producing an all-solid-state battery using the slurry composition for all-solid-state battery production.
    Type: Application
    Filed: July 11, 2022
    Publication date: November 21, 2024
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Jo OTSUKA, Kenji YAMAUCHI
  • Publication number: 20240279369
    Abstract: The present invention provides an ultra-high molecular weight polyvinyl alcohol resin that can provide, when acetalized, a resin film having high strength and high transparency. The present invention also provides a polyvinyl acetal resin, a method for producing a polyvinyl alcohol resin, and a method for producing a polyvinyl acetal resin. Provided is a polyvinyl alcohol resin having at least one selected from the group consisting of a sulfone group, an alkyl sulfonyl group, an aromatic sulfonyl group, a sulfine group, an imidazoline group, a carboxy group, an amide group, an amino group, and a hydroxy group at at least one molecular end of a main chain, having a weight average molecular weight (Mw) of 1,000,000 or more, and containing a water-soluble surfactant in an amount of 0.02% by weight or less.
    Type: Application
    Filed: June 20, 2022
    Publication date: August 22, 2024
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kenji YAMAUCHI, Tatsuya MATSUKUBO, Takeshi WAKIYA, Jo OTSUKA, Yumi KANEKO, Kanako URADOKORO
  • Publication number: 20230167214
    Abstract: The present invention provides a resin composition for sintering, an inorganic fine particle-dispersed slurry composition containing the resin composition for sintering, and an inorganic fine particle-dispersed sheet formed using the resin composition for sintering or inorganic fine particle-dispersed slurry composition. The present invention relates to a resin composition for sintering, containing a binder resin, the binder resin including a (meth)acrylic resin (A), the (meth)acrylic resin (A) having at least one selected from the group consisting of a sulfone group, an alkyl sulfonyl group, an aromatic sulfonyl group, a sulfine group, an imidazoline group, a carboxy group, an amide group, an amino group, and a hydroxy group at at least one molecular end of the main chain and having a weight average molecular weight (Mw) of 1,000,000 or more, an amount of a water-soluble surfactant in the resin composition for sintering being 0 parts by weight or more and 0.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 1, 2023
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kenji YAMAUCHI, Takeshi WAKIYA, Tatsuya MATSUKUBO, Kanako TAMAGAWA, Jo OTSUKA, Yumi KANEKO
  • Patent number: 11649308
    Abstract: A resin composition which has excellent decomposability at low temperature, can provide a molded article having high strength, and enables an increase in the number of layers and thinning so as to enable production of an all-solid-state battery and a ceramic laminate having excellent properties. An inorganic fine particle-dispersed slurry composition containing the resin composition, an inorganic fine particle-dispersed sheet, a method for producing an all-solid-state battery, and a method for producing a multilayer ceramic capacitor. A resin composition containing a (meth)acrylic resin, the (meth)acrylic resin containing 20 to 70% by weight in total of a segment derived from methyl methacrylate and a segment derived from isobutyl methacrylate, 1 to 10% by weight of a segment derived from a glycidyl group-containing (meth)acrylate, and 5 to 40% by weight of a segment derived from a (meth)acrylate containing an ester substituent having a carbon number of 8 or more.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 16, 2023
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kenji Yamauchi, Tatsuya Matsukubo, Shinya Nakano, Jo Otsuka
  • Publication number: 20210317296
    Abstract: The present invention aims to provide a vehicle composition for inorganic fine particle dispersion which has excellent decomposability at low temperature and enables degreasing in a short time, an inorganic fine particle-dispersed slurry composition containing the vehicle composition for inorganic fine particle dispersion, and a method for producing an inorganic fine particle-dispersed sheet with the inorganic fine particle-dispersed slurry composition. The present invention relates to a vehicle composition for inorganic fine particle dispersion, containing a binder resin, an organic solvent, and an organic compound having a boiling point at normal pressure of 200° C. or higher and lower than 400° C.
    Type: Application
    Filed: August 21, 2019
    Publication date: October 14, 2021
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Jo OTSUKA, Tatsuya MATSUKUBO, Kenji YAMAUCHI, Yasuko ISHIDA
  • Publication number: 20200199345
    Abstract: The present invention provides a resin composition which has excellent decomposability at low temperature, can provide a molded article having high strength, and enables an increase in the number of layers and thinning so as to enable production of an all-solid-state battery and a ceramic laminate (e.g., a multilayer ceramic capacitor) having excellent properties. The present invention also relates to an inorganic fine particle-dispersed slurry composition containing the resin composition, an inorganic fine particle-dispersed sheet, a method for producing an all-solid-state battery, and a method for producing a multilayer ceramic capacitor.
    Type: Application
    Filed: June 21, 2018
    Publication date: June 25, 2020
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kenji YAMAUCHI, Tatsuya MATSUKUBO, Shinya NAKANO, Jo OTSUKA