Patents by Inventor Shun ARAKI

Shun ARAKI 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).

  • Polyarylene sulfide resin, method for producing same, poly(arylene sulfonium salt), and method for producing poly(arylene sulfonium salt)
    Patent number: 10947346
    Abstract: Disclosed is a production method comprising a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: March 16, 2021
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • POLYARYLENE SULFIDE RESIN, METHOD FOR PRODUCING SAME, POLY(ARYLENE SULFONIUM SALT), AND METHOD FOR PRODUCING POLY(ARYLENE SULFONIUM SALT)
    Publication number: 20200157284
    Abstract: Disclosed is a production method comprising a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • Polyarylene sulfide resin, method for producing same, poly(arylene sulfonium salt), and method for producing poly(arylene sulfonium salt)
    Patent number: 10577464
    Abstract: The present invention relates to a polyarylene sulfide resin, a method for producing the same, a poly(arylene sulfonium salt), and a method for producing the same. The production method comprises a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: March 3, 2020
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • POLYARYLENE SULFIDE RESIN, METHOD FOR PRODUCING SAME, POLY(ARYLENE SULFONIUM SALT), AND METHOD FOR PRODUCING POLY(ARYLENE SULFONIUM SALT)
    Publication number: 20180057635
    Abstract: Disclosed is a production method comprising a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Application
    Filed: February 23, 2016
    Publication date: March 1, 2018
    Applicants: DIC Corporation, National University Corporation, Iwate University
    Inventors: Shun ARAKI, Hajime WATANABE, Satoshi OGAWA, Toshikazu TAKATA