Patents by Inventor Ryosuke TSUHARA

Ryosuke TSUHARA 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).

  • Iminodiacetate chelating resin and manufacturing method therefor
    Patent number: 10577480
    Abstract: The present invention relates to an iminodiacetic acid chelating resin, wherein the water amount in the resin is from 50 to 75% and the volume ratio of Na form/H form is from 1.4 to 1.8. Furthermore, the present invention relates to a method for producing an iminodiacetic acid chelating resin, wherein an alcohol is used as a solvent for the amination reaction of a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile or sodium iodide and/or potassium iodide is used as a catalyst for the amination reaction.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 3, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Ryosuke Tsuhara, Masahiko Hashiguchi, Hirohisa Kubota
  • IMINODIACETATE CHELATING RESIN AND MANUFACTURING METHOD THEREFOR
    Publication number: 20180100055
    Abstract: The present invention relates to an iminodiacetic acid chelating resin, wherein the water amount in the resin is from 50 to 75% and the volume ratio of Na form/H form is from 1.4 to 1.8. Furthermore, the present invention relates to a method for producing an iminodiacetic acid chelating resin, wherein an alcohol is used as a solvent for the amination reaction of a chloromethylated styrene crosslinked copolymer with iminodiacetonitrile or sodium iodide and/or potassium iodide is used as a catalyst for the amination reaction.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 12, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Ryosuke TSUHARA, Masahiko HASHIGUCHI, Hirohisa KUBOTA