Patents by Inventor Tetsurou NOBUYASU

Tetsurou NOBUYASU 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).

  • Polycarbonate resin composition, method for producing same and molded article of this resin composition
    Patent number: 9777152
    Abstract: To provide a polycarbonate resin composition excellent in surface hardness and impact strength. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; (ii) the weight ratio of the polycarbonate resin (a) to the polycarbonate resin (b) in the polycarbonate resin is from 1:99 to 45:55; (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; and (iv) the Charpy impact strength of the polycarbonate resin composition is higher than the Charpy impact strength of the polycarbonate resin (a).
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 3, 2017
    Assignees: Mitsubishi Chemical Corporation, Mitsubishi Engineering-Plastics Corporation
    Inventors: Tatsuya Hitomi, Ryouhei Nishihara, Masanori Yamamoto, Michio Nakata, Tetsurou Nobuyasu, Ryuuji Uchimura, Kazuyuki Takahashi, Kenji Tsuruhara, Tomonari Yokoyama
  • Polycarbonate resin composition, method for producing same and molded article of this resin composition
    Patent number: 9771477
    Abstract: To provide a polycarbonate resin composition excellent in the surface hardness, the heat resistance, the moldability and the flame retardancy. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the following requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO 15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184; (ii) the glass transition point Tg(a) of the polycarbonate resin (a) and the glass transition point Tg(b) of the polycarbonate resin (b) satisfy the relation of the following (Formula 1): Tg(b)?45° C. <Tg(a)<Tg(b)?10° C.??(Formula 1): and (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO 15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 26, 2017
    Assignees: Mitsubishi Chemical Corporation, Mitsubishi Engineering-Plastics Corporation
    Inventors: Tatsuya Hitomi, Ryouhei Nishihara, Masanori Yamamoto, Michio Nakata, Tetsurou Nobuyasu, Ryuuji Uchimura, Kazuyuki Takahashi, Kenji Tsuruhara, Tomonari Yokoyama
  • POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION
    Publication number: 20160237276
    Abstract: To provide a polycarbonate resin composition excellent in the surface hardness, the heat resistance, the moldability and the flame retardancy. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the following requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO 15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184; (ii) the glass transition point Tg(a) of the polycarbonate resin (a) and the glass transition point Tg(b) of the polycarbonate resin (b) satisfy the relation of the following (Formula 1): Tg(b)?45° C.<Tg(a)<Tg(b)?10° C.??(Formula 1) and (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO 15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184.
    Type: Application
    Filed: April 28, 2016
    Publication date: August 18, 2016
    Applicants: Mitsubishi Chemical Corporation, Mitsubishi Engineering-Plastics Corporation
    Inventors: Tatsuya HITOMI, Ryouhei NISHIHARA, Masanori YAMAMOTO, Michio NAKATA, Tetsurou NOBUYASU, Ryuuji UCHIMURA, Kazuyuki TAKAHASHI, Kenji TSURUHARA, Tomonari YOKOYAMA
  • POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION
    Publication number: 20140018498
    Abstract: To provide a polycarbonate resin composition excellent in the surface hardness, the heat resistance, the moldability and the flame retardancy. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the following requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO 15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184; (ii) the glass transition point Tg(a) of the polycarbonate resin (a) and the glass transition point Tg(b) of the polycarbonate resin (b) satisfy the relation of the following (Formula 1): Tg(b)?45° C.<Tg(a)<Tg(b)?10° C.??(Formula 1) (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO 15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 16, 2014
    Applicants: Mitsubishi Engineering-Plastics Corporation, Mitsubishi Chemical Corporation
    Inventors: Tatsuya HITOMI, Ryouhei NISHIHARA, Masanori YAMAMOTO, Michio NAKATA, Tetsurou NOBUYASU, Ryuuji UCHIMURA, Kazuyuki TAKAHASHI, Kenji TSURUHARA, Tomonari YOKOYAMA
  • POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION
    Publication number: 20130030112
    Abstract: To provide a polycarbonate resin composition excellent in the surface hardness, the heat resistance, the moldability and the flame retardancy. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the following requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO 15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184; (ii) the glass transition point Tg(a) of the polycarbonate resin (a) and the glass transition point Tg(b) of the polycarbonate resin (b) satisfy the relation of the following (Formula 1): Tg(b)?45° C.<Tg(a)<Tg(b)?10° C.??(Formula 1) and (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO 15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO 15184.
    Type: Application
    Filed: October 1, 2012
    Publication date: January 31, 2013
    Inventors: Tatsuya HITOMI, Ryouhei NISHIHARA, Masanori YAMAMOTO, Michio NAKATA, Tetsurou NOBUYASU, Ryuuji UCHIMURA, Kazuyuki TAKAHASHI, Kenji TSURUHARA, Tomonari YOKOYAMA
  • POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION
    Publication number: 20130030113
    Abstract: To provide a polycarbonate resin composition excellent in surface hardness and impact strength. A polycarbonate resin composition comprising at least a polycarbonate resin (a) and a polycarbonate resin (b) having structural units different from the polycarbonate resin (a), which satisfies the requirements: (i) the pencil hardness of the polycarbonate resin (a) as specified by ISO15184 is higher than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; (ii) the weight ratio of the polycarbonate resin (a) to the polycarbonate resin (b) in the polycarbonate resin is from 1:99 to 45:55; (iii) the pencil hardness of the polycarbonate resin composition as specified by ISO15184 is higher by at least two ranks than the pencil hardness of the polycarbonate resin (b) as specified by ISO15184; and (iv) the Charpy impact strength of the polycarbonate resin composition is higher than the Charpy impact strength of the polycarbonate resin (a).
    Type: Application
    Filed: October 1, 2012
    Publication date: January 31, 2013
    Inventors: Tatsuya HITOMI, Ryouhei Nishihara, Masanori Yamamoto, Michio Nakata, Tetsurou Nobuyasu, Ryuuji Uchimura, Kazuyuki Takahashi, Kenji Tsuruhara, Tomonari Yokohama