Patents by Inventor Yumika KURIHARA

Yumika KURIHARA 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).

  • Methacrylic resin, methacrylic resin composition, film, and production method
    Patent number: 10597524
    Abstract: Provided are a methacrylic resin composition and a film containing a methacrylic resin that includes: 50 mass % to 97 mass % of a methacrylic acid ester monomer unit (A); 3 mass % to 30 mass % of a structural unit (B) having a cyclic structure-containing main chain; and 0 mass % to 20 mass % of another vinyl monomer unit (C) that is copolymerizable with a methacrylic acid ester monomer. The methacrylic resin satisfies the following conditions (1) and (2): (1) the methacrylic resin has a weight average molecular weight of 65,000 to 300,000 as measured by GPC; and (2) the total content of specific components is 0.01 mass % to 0.40 mass % as determined by GC/MS.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: March 24, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Fumiki Murakami, Yutaka Tada, Yumika Kurihara, Nobuhiro Kobayashi, Masami Yonemura
  • METHACRYLIC RESIN, METHACRYLIC RESIN COMPOSITION, FILM, AND PRODUCTION METHOD
    Publication number: 20180305538
    Abstract: Provided are a methacrylic resin composition and a film containing a methacrylic resin that includes: 50 mass % to 97 mass % of a methacrylic acid ester monomer unit (A); 3 mass % to 30 mass % of a structural unit (B) having a cyclic structure-containing main chain; and 0 mass % to 20 mass % of another vinyl monomer unit (C) that is copolymerizable with a methacrylic acid ester monomer. The methacrylic resin satisfies the following conditions (1) and (2): (1) the methacrylic resin has a weight average molecular weight of 65,000 to 300,000 as measured by GPC; and (2) the total content of specific components is 0.01 mass % to 0.40 mass % as determined by GC/MS.
    Type: Application
    Filed: November 14, 2016
    Publication date: October 25, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Fumiki MURAKAMI, Yutaka TADA, Yumika KURIHARA, Nobuhiro KOBAYASHI, Masami YONEMURA