Patents by Inventor Kakeru CHIGAMA

Kakeru CHIGAMA 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).

  • Thermoplastic elastomer composition having excellent molding appearance and a molded product obtained therefrom
    Patent number: 11407885
    Abstract: The present invention relates to a thermoplastic elastomer composition comprising 10 to 80 parts by mass of polyolefin resin (A), 10 to 80 parts by mass of styrene-based thermoplastic elastomer (B), and 1 to 20 parts by mass of at least partially crosslinked rubber (C) (with the total amount of the components (A), (B) and (C) being 100 parts by mass), wherein the composition has a type D hardness (i.e., the instantaneous value) of 35 or more and 70 or less in accordance with JIS K6253, and relates to a molded thermoplastic elastomer product obtained by molding the composition.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: August 9, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masatoshi Sasaki, Makoto Yaegashi, Kakeru Chigama, Remi Kusumoto
  • THERMOPLASTIC ELASTOMER COMPOSITION AND MOLDED ARTICLE OF THE SAME
    Publication number: 20220153972
    Abstract: [Object] An object of the present invention is to provide a thermoplastic elastomer composition with excellent heat aging resistance and also excellent hardness and mechanical properties as well as excellent moldability. [Solution] A thermoplastic elastomer composition (I) including a cross-linked product of an ethylene.?-olefin.nonconjugated polyene copolymer (A) with a phenolic resin cross-linking agent (E), and 360 to 460 parts by mass of a crystalline polyolefin (B), 70 to 140 parts by mass of a softener (C), and 2 to 6 parts by mass of a lubricant (D) (provided that the amount of the copolymer (A) is 100 parts by mass).
    Type: Application
    Filed: March 16, 2020
    Publication date: May 19, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yasuhiro SHIBATA, Yusuke YODA, Kakeru CHIGAMA, Akihiro YAMAMOTO
  • THERMOPLASTIC ELASTOMER COMPOSITION HAVING EXCELLENT MOLDING APPEARANCE AND A MOLDED PRODUCT OBTAINED THEREFROM
    Publication number: 20200024435
    Abstract: The present invention relates to a thermoplastic elastomer composition comprising 10 to 80 parts by mass of polyolefin resin (A), 10 to 80 parts by mass of styrene-based thermoplastic elastomer (B), and 1 to 20 parts by mass of at least partially crosslinked rubber (C) (with the total amount of the components (A), (B) and (C) being 100 parts by mass), wherein the composition has a type D hardness (i.e., the instantaneous value) of 35 or more and 70 or less in accordance with JIS K6253, and relates to a molded thermoplastic elastomer product obtained by molding the composition.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 23, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masatoshi SASAKI, Makoto YAEGASHI, Kakeru CHIGAMA, Remi KUSUMOTO