Patents by Inventor Akifumi Tobe

Akifumi Tobe 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).

  • Epoxy resin, epoxy resin-containing composition and cured product thereof
    Patent number: 11787898
    Abstract: An object of the present invention is to provide an epoxy resin, an epoxy resin-containing composition, and a cured product which are excellent in flexibility. The present invention relates to an epoxy resin, which is a reaction product of an epoxy compound (A) and an acid-terminated polyester (B). In addition, the present invention relates to an epoxy resin-containing composition and a cured product obtained by using the epoxy resin.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: October 17, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Akifumi Tobe, Kou Miyama
  • AQUEOUS COATING COMPOSITION, MEMBER FOR CAN, AND CAN
    Publication number: 20200407591
    Abstract: An aqueous coating composition which does not contain any epoxy resin having a bisphenol skeleton or a biphenol skeleton, such as BPA, as a raw material, and can be formed into a coating film which has reduced adsorption of flavor odor components in can contents and has high retort resistance and processability. The aqueous coating composition includes a composite resin and water, where the composite resin includes a moiety of an epoxy resin and a moiety of a carboxyl group-containing acrylate copolymer, and the epoxy resin forming the moiety of the epoxy resin is a reaction product of an epoxy group in an epoxy compound not having any one of a bisphenol skeleton and a biphenol skeleton with a carboxyl group in a carboxyl group-containing polyester, the reaction product having an epoxy group.
    Type: Application
    Filed: April 12, 2019
    Publication date: December 31, 2020
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYOCHEM CO., LTD., Mitsubishi Chemical Corporation
    Inventors: Shoya SATO, Akifumi TOBE, Kou MIYAMA
  • EPOXY GROUP-CONTAINING POLYORGANOSILOXANE, CURABLE RESIN COMPOSITION CONTAINING EPOXY GROUP-CONTAINING POLYORGANOSILOXANE, AND CURED PRODUCT THEREOF
    Publication number: 20200377662
    Abstract: An object of the present invention is to provide an epoxy group-containing polyorganosiloxane, a curable resin composition and a cured product which are excellent in curability, surface nature of a coating film, adhesiveness, and impact resistance. The epoxy group-containing polyorganosiloxane of the present invention contains an M unit (R1R2R3SiO1/2), a D unit (R4R5O2/2), and a Q unit (SiO4/2), wherein a content of a T unit (R6SiO3/2) with respect to total silicon is 80 mol % or less. The curable resin composition of the present invention contains the epoxy group-containing polyorganosiloxane (A) and a curing agent (B).
    Type: Application
    Filed: August 20, 2020
    Publication date: December 3, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akifumi TOBE, Mutsumi YAMAZAKI, Akihiro ITO, Takumi WATANABE, Noriaki TERADA
  • EPOXY RESIN, EPOXY RESIN-CONTAINING COMPOSITION AND CURED PRODUCT THEREOF
    Publication number: 20200087442
    Abstract: An object of the present invention is to provide an epoxy resin, an epoxy resin-containing composition, and a cured product which are excellent in flexibility. The present invention relates to an epoxy resin, which is a reaction product of an epoxy compound (A) and an acid-terminated polyester (B). In addition, the present invention relates to an epoxy resin-containing composition and a cured product obtained by using the epoxy resin.
    Type: Application
    Filed: November 21, 2019
    Publication date: March 19, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akifumi Tobe, Kou Miyama