Patents by Inventor Yoshihisa KATSUNISHI

Yoshihisa KATSUNISHI 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).

  • EVOH EXTRACTANT, EVOH EXTRACTION METHOD USING THE SAME, EVOH RECOVERY METHOD, AND EVOH EXTRACTANT REGENERATION METHOD
    Publication number: 20240052128
    Abstract: Provided is an EVOH extractant capable of efficiently extracting EVOH from an EVOH layer-containing multilayer resin molded body. Provided is a method for efficiently extracting and recovering EVOH from an EVOH layer-containing multilayer resin molded body. An EVOH extractant including a polar solvent having an SP value of 9 to 13 and a quaternary ammonium salt. An EVOH extraction method for extracting EVOH, including applying the EVOH extractant described above to an EVOH layer-containing multilayer resin molded body. An EVOH recovery method including a step of mixing a solution containing EVOH that has been extracted by the EVOH extraction method described above with water and/or a lower alcohol to deposit EVOH, followed by filtration or centrifugation.
    Type: Application
    Filed: January 5, 2022
    Publication date: February 15, 2024
    Applicant: KYOEISHA CHEMICAL CO., LTD.
    Inventors: Makoto ISHIKAWA, Yoshihisa KATSUNISHI, Masashi KINUGAWA
  • DESALINATION PERFORMANCE RESTORATION AGENT FOR CELLULOSE ACETATE MEMBRANE AND DESALINATION PERFORMANCE RESTORATION METHOD FOR CELLULOSE ACETATE MEMBRANE
    Publication number: 20220355253
    Abstract: A desalination performance restoration agent for a cellulose acetate membrane contains: a solvent; and a modified polyvinyl alcohol mixed in the solvent. The modified polyvinyl alcohol has an acetyl group structure in at least part of polyvinyl alcohol.
    Type: Application
    Filed: October 20, 2020
    Publication date: November 10, 2022
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KYOEISHA CHEMICAL CO., LTD.
    Inventors: Takayoshi HORI, Katsunori MATSUI, Sho YOKOGAWA, Yoshiaki ITO, Ryo KAMITO, Yoshihisa KATSUNISHI, Atsuyoshi UEDA, Takahiro MASUI