Patents by Inventor Kohei YOSHIYA

Kohei YOSHIYA 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: 11498310
    Abstract: A sheet formed from a carbon fiber reinforced thermoplastic resin with a simplified production process and excellent mechanical characteristics, and a production method of said sheet is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin, and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: November 15, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki Sugiyama, Kohei Yoshiya, Hidetaka Shimizu, Hiroyoshi Maruyama
  • Patent number: 11466132
    Abstract: A sheet formed from carbon fiber reinforced thermoplastic resin with high heat resistance, and a production method of said sheet is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin. The aforementioned at least one of a polycarbonate resin and a polyarylate resin has a constituent unit derived from a dihydric phenol represented by formula (1), and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass. (In formula (1), R1-R4 independently represent a hydrogen, a halogen, a nitro, or a methyl group; X represents a divalent group represented by any of formulas (2) to (4).
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: October 11, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki Sugiyama, Kohei Yoshiya, Hidetaka Shimizu, Shun Ishikawa, Hiroyoshi Maruyama
  • Publication number: 20220289906
    Abstract: The present application provides a polycarbonate-based coating resin composition having high adhesiveness, more specifically provides a polycarbonate resin composition that contains not less than 0.1 parts by mass of a polyisocyanate compound and 100 parts by mass of a terminal-modified polycarbonate resin (A) having a structural unit (2) and a terminal structure represented by structural formula (1). [In formula (1) and formula (2), R1-R7, X, Y, Z, and a are as described in the description.
    Type: Application
    Filed: September 1, 2020
    Publication date: September 15, 2022
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kohei YOSHIYA, Noriyoshi OGAWA
  • Publication number: 20220289905
    Abstract: The present application provides a polycarbonate-based coating resin composition which exhibits high adhesiveness. The above are achieved by a polycarbonate resin composition which contains (A) a polycarbonate resin that contains a constituent unit represented by general formula (1) and a terminal structure represented by general formula (2) and (B) a polyisocyanate compound, wherein 0.1% by mass or more of the polyisocyanate compound (B) is contained on the basis of the total mass of the polycarbonate resin (A) and the polyisocyanate compound (B). (In formula (1) and formula (2), R1 to R3, X, m and n are as defined in the description.
    Type: Application
    Filed: September 3, 2020
    Publication date: September 15, 2022
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventor: Kohei YOSHIYA
  • Patent number: 11365298
    Abstract: A sheet formed from carbon fiber reinforced thermoplastic resin with high moldability, and a production method of said resin is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin. The aforementioned at least one of a polycarbonate resin and a polyarylate resin has a terminal structure derived from a monohydric phenol represented by formula (1) and a constituent unit derived from a dihydric phenol, and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass. (In formula (1), R1 represents an alkyl group with 8-36 carbons, or an alkenyl group with 8-36 carbons, and R2-R5 independently represent a hydrogen, a halogen, an alkyl group with 1-20 carbons optionally having a substituent, or an aryl group with 6-12 carbons optionally having a substituent.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 21, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki Sugiyama, Kohei Yoshiya, Hidetaka Shimizu, Hiroyoshi Maruyama
  • Publication number: 20200277462
    Abstract: A sheet formed from a carbon fiber reinforced thermoplastic resin with a simplified production process and excellent mechanical characteristics, and a production method of said sheet is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin, and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 3, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki SUGIYAMA, Kohei YOSHIYA, Hidetaka SHIMIZU, Hiroyoshi MARUYAMA
  • Publication number: 20200277453
    Abstract: A sheet formed from carbon fiber reinforced thermoplastic resin with high heat resistance, and a production method of said sheet is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin. The aforementioned at least one of a polycarbonate resin and a polyarylate resin has a constituent unit derived from a dihydric phenol represented by formula (1), and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass. (In formula (1), R1-R4 independently represent a hydrogen, a halogen, a nitro, or a methyl group; X represents a divalent group represented by any of formulas (2) to (4).
    Type: Application
    Filed: May 14, 2018
    Publication date: September 3, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki SUGIYAMA, Kohei YOSHIYA, Hidetaka SHIMIZU, Shun ISHIKAWA, Hiroyoshi MARUYAMA
  • Publication number: 20200140635
    Abstract: A sheet formed from carbon fiber reinforced thermoplastic resin with high moldability, and a production method of said resin is provided. This sheet is formed from a carbon fiber reinforced thermoplastic resin that contains carbon fibers, dichloromethane, and a thermoplastic resin containing at least one of a polycarbonate resin and a polyarylate resin. The aforementioned at least one of a polycarbonate resin and a polyarylate resin has a terminal structure derived from a monohydric phenol represented by formula (1) and a constituent unit derived from a dihydric phenol, and the content of the dichloromethane contained in the sheet is 10-10,000 ppm by mass. (In formula (1), R1 represents an alkyl group with 8-36 carbons, or an alkenyl group with 8-36 carbons, and R2-R5 independently represent a hydrogen, a halogen, an alkyl group with 1-20 carbons optionally having a substituent, or an aryl group with 6-12 carbons optionally having a substituent.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 7, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Genki SUGIYAMA, Kohei YOSHIYA, Hidetaka SHIMIZU, Hiroyoshi MARUYAMA