Patents by Inventor Tsukasa YOSHITOSHI

Tsukasa YOSHITOSHI 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).

  • Hollow fiber membrane, and method for producing hollow fiber membrane
    Patent number: 10744467
    Abstract: One aspect of the present invention concerns a porous hollow fiber membrane containing a vinylidene fluoride-based resin. The hollow fiber membrane has a gradient structure in which a pore diameter of pores in the hollow fiber membrane gradually becomes smaller at least toward one of inner and outer peripheral surface sides and is hydrophilized by containing a crosslinked body of a polyvinylpyrrolidone-based resin.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 18, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Youhei Yabuno, Tsukasa Yoshitoshi, Yusuke Hayashi
  • HOLLOW FIBER MEMBRANE, AND METHOD FOR PRODUCING HOLLOW FIBER MEMBRANE
    Publication number: 20180169590
    Abstract: One aspect of the present invention concerns a porous hollow fiber membrane containing a vinylidene fluoride-based resin. The hollow fiber membrane has a gradient structure in which a pore diameter of pores in the hollow fiber membrane gradually becomes smaller at least toward one of inner and outer peripheral surface sides and is hydrophilized by containing a crosslinked body of a polyvinylpyrrolidone-based resin.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 21, 2018
    Applicant: KURARAY CO., LTD.
    Inventors: Youhei YABUNO, Tsukasa YOSHITOSHI, Yusuke HAYASHI