Patents by Inventor Koichiro Sanefuji

Koichiro Sanefuji 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).

  • Patent number: 11453770
    Abstract: Provided is a resin composition including 40 to 99% by mass of a fluorine-based resin (A), and 1 to 60% by mass of a matting agent (B), in which a swell ratio as measured under the conditions of a measurement temperature of 230° C., an ambient temperature of 23° C., and a shear rate of 96 (1/sec) is 0.90 to 2.00.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: September 27, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Megumi Higashikawa, Koichiro Sanefuji, Junichi Abe
  • Publication number: 20200010660
    Abstract: Provided is a resin composition including 40 to 99% by mass of a fluorine-based resin (A), and 1 to 60% by mass of a matting agent (B), in which a swell ratio as measured under the conditions of a measurement temperature of 230° C., an ambient temperature of 23° C., and a shear rate of 96 (1/sec) is 0.90 to 2.00.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Megumi Higashikawa, Koichiro Sanefuji, Junichi Abe
  • Patent number: 10493737
    Abstract: Provided are a thermoplastic resin composition whereby gum formation is suppressed during manufacturing of a matte fluororesin molded article such as a film, and a fluorine-based matte film having excellent matte properties and chemical resistance, and a layered film. A thermoplastic resin composition (?) for a chemical-resistant matte film, comprising a fluorine-based resin (A), a matting agent (B) which is a thermoplastic resin insoluble in the fluorine-based resin (A), and a thermoplastic resin (C) soluble in the fluorine-based resin (A). A thermoplastic resin composition (?) containing the fluorine-based resin (A) and an acrylic matting agent (D) which is a thermoplastic resin, the content ratio of alkyl acrylate units with respect to 100% by mass of monofunctional monomer units in the monomer units constituting the matting agent (D) being 50-100% by mass, and the content ratio of other monofunctional monomer units being 0-50% by mass.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasunori Kawase, Yuji Kawaguchi, Koichiro Sanefuji
  • Patent number: 10131120
    Abstract: A transparent laminated film is described, which has excellent chemical resistance and surface hardness, is glossy even after heating and which has a low haze value, and a laminated molded article that uses the film.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 20, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koichiro Sanefuji, Yuhei Konokawa, Yoshinori Abe
  • Publication number: 20170232717
    Abstract: Provided is a laminate film that exhibits an excellent appearance, chemical resistance, and weather resistance, and suppresses yellowing even after long-term heating. The laminate film is formed from a surface layer including a vinylidene fluoride resin (F) and an acrylic resin composition (Y) layer, the acrylic resin composition (Y) containing a hindered amine light stabilizer having a molecular weight of 1400 or more. Further provided is a molded laminate including a base material and the laminate film laminated to the base material. Further provided is a method for producing a molded laminate including a step for producing a preform body by vacuum forming or pressure forming the laminate film in a first die, and a step for integrating the preform body and the base material by injection molding the resin that is to be the base material in a second die.
    Type: Application
    Filed: August 11, 2015
    Publication date: August 17, 2017
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Koichiro SANEFUJI, Yuji KAWAGUCHI, Yasunori KAWASE, Kazuya OAIRA
  • Publication number: 20170197394
    Abstract: Provided are a thermoplastic resin composition whereby gum formation is suppressed during manufacturing of a matte fluororesin molded article such as a film, and a fluorine-based matte film having excellent matte properties and chemical resistance, and a layered film. A thermoplastic resin composition (?) for a chemical-resistant matte film, comprising a fluorine-based resin (A), a matting agent (B) which is a thermoplastic resin insoluble in the fluorine-based resin (A), and a thermoplastic resin (C) soluble in the fluorine-based resin (A). A thermoplastic resin composition (?) containing the fluorine-based resin (A) and an acrylic matting agent (D) which is a thermoplastic resin, the content ratio of alkyl acrylate units with respect to 100% by mass of monofunctional monomer units in the monomer units constituting the matting agent (D) being 50-100% by mass, and the content ratio of other monofunctional monomer units being 0-50% by mass.
    Type: Application
    Filed: July 14, 2015
    Publication date: July 13, 2017
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Yasunori KAWASE, Yuji KAWAGUCHI, Koichiro SANEFUJI
  • Publication number: 20140342162
    Abstract: A transparent laminated film is described, which has excellent chemical resistance and surface hardness, is glossy even after heating and which has a low haze value, and a laminated molded article that uses the film.
    Type: Application
    Filed: September 12, 2012
    Publication date: November 20, 2014
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Koichiro Sanefuji, Yuhei Konokawa, Yoshinori Abe
  • Patent number: 7786184
    Abstract: An active energy ray curable resin composition for a sheet-like optical article capable of providing a cured material having a dynamic elastic modulus at 25° C. of 950 MPa or less and a dynamic elastic modulus at 60° C. of 100 MPa or more and a sheet-like optical article prepared from the resin composition are disclosed. The sheet-like optical article (e.g., prism sheet) has good heat resistance and extremely small warpage.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: August 31, 2010
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Shinji Makino, Tsuyoshi Nakagawa, Koichiro Sanefuji
  • Publication number: 20090030104
    Abstract: An active energy ray curable resin composition for a sheet-like optical article capable of providing a cured material having a dynamic elastic modulus at 25° C. of 950 MPa or less and a dynamic elastic modulus at 60° C. of 100 MPa or more and a sheet-like optical article prepared from the resin composition are disclosed. The sheet-like optical article (e.g., prism sheet) has good heat resistance and extremely small warpage.
    Type: Application
    Filed: October 12, 2005
    Publication date: January 29, 2009
    Inventors: Shinji Makino, Tsuyoshi Nakagawa, Koichiro Sanefuji