Patents by Inventor Yohei Takakura

Yohei Takakura 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).

  • Publication number: 20230331886
    Abstract: A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in a solvent to produce the fluoropolymer. The solvent contains a fluorine-containing ether compound (1) represented by formula:R1—O—R2 wherein R1 represents a partially fluorinated alkyl group, and R2 represents a non-fluorinated alkyl group, a partially fluorinated alkyl group, or a completely fluorinated alkyl group, and in the solvent, a content of a fluorine-containing olefin compound (2) represented by formula:R3—CF?CF—R4—O—R2 wherein R3 represents H, F, a partially fluorinated alkyl group, or a completely fluorinated alkyl group, R4 represents a single bond, a partially fluorinated alkylene group, or a completely fluorinated alkylene group, and R2 is the same as described above, is 1.00% by mass or less based on a content of the fluorine-containing ether compound (1), and wherein the fluoromonomer is selected from tetrafluoroethylene, chlorotrifluoroethylene, and vinylidene fluoride.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 19, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.,
    Inventors: Manami OKADA, Daisuke Kubota, Takashi Sekiguchi, Manabu Fujisawa, Tatsuya Funaoka, Yohei Takakura