Patents by Inventor Joji Ohshita

Joji Ohshita 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: 20230145799
    Abstract: A composite semipermeable membrane capable of forming, on a surface of a porous support in a highly reproducible manner, a separation layer that is extremely thin and that exhibits superior separability. It provides, on a surface of a porous support, a composite semipermeable membrane that has an organic/inorganic hybrid separation layer that is extremely thin and that exhibits superior separability. A method for manufacturing a composite semipermeable membrane includes forming, on a surface of a porous support, a separation layer containing a cross-linked condensate having a siloxane bond by bringing an organic solution that contains an organic silicon compound containing three or more reactive functional groups, each of which is at least one type selected from a hydrolyzable group and a hydroxyl group, into contact with water or an aqueous solution on the porous support, and by performing interfacial polycondensation of the organic silicon compound.
    Type: Application
    Filed: January 9, 2023
    Publication date: May 11, 2023
    Applicants: NITTO DENKO CORPORATION, HIROSHIMA UNIVERSITY
    Inventors: Toshiyuki KAWASHIMA, Shinichi INOUE, Masahiko HIROSE, Joji OHSHITA, Toshinori TSURU, Kazuki YAMAMOTO
  • Patent number: 11590458
    Abstract: A method for manufacturing a composite semipermeable membrane is capable of forming, on a surface of a porous support in a highly reproducible manner, a separation layer that is extremely thin and that exhibits superior separability. It provides, on a surface of a porous support, a composite semipermeable membrane that has an organic/inorganic hybrid separation layer that is extremely thin and that exhibits superior separability. A method for manufacturing a composite semipermeable membrane includes forming, on a surface of a porous support, a separation layer containing a cross-linked condensate having a siloxane bond by bringing an organic solution that contains an organic silicon compound containing three or more reactive functional groups, each of which is at least one type selected from a hydrolyzable group and a hydroxyl group, into contact with water or an aqueous solution on the porous support, and by performing interfacial polycondensation of the organic silicon compound.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: February 28, 2023
    Assignees: NITTO DENKO CORPORATION, HIROSHIMA UNIVERSITY
    Inventors: Toshiyuki Kawashima, Shinichi Inoue, Masahiko Hirose, Joji Ohshita, Toshinori Tsuru, Kazuki Yamamoto
  • Publication number: 20200353426
    Abstract: A method for manufacturing a composite semipermeable membrane is capable of forming, on a surface of a porous support in a highly reproducible manner, a separation layer that is extremely thin and that exhibits superior separability. It provides, on a surface of a porous support, a composite semipermeable membrane that has an organic/inorganic hybrid separation layer that is extremely thin and that exhibits superior separability. A method for manufacturing a composite semipermeable membrane includes forming, on a surface of a porous support, a separation layer containing a cross-linked condensate having a siloxane bond by bringing an organic solution that contains an organic silicon compound containing three or more reactive functional groups, each of which is at least one type selected from a hydrolyzable group and a hydroxyl group, into contact with water or an aqueous solution on the porous support, and by performing interfacial polycondensation of the organic silicon compound.
    Type: Application
    Filed: January 23, 2019
    Publication date: November 12, 2020
    Applicants: NITTO DENKO CORPORATION, HIROSHIMA UNIVERSITY
    Inventors: Toshiyuki KAWASHIMA, Shinichi INOUE, Masahiko HIROSE, Joji OHSHITA, Toshinori TSURU, Kazuki YAMAMOTO
  • Publication number: 20130005979
    Abstract: This invention relates to a novel thienopyridine derivative represented by formula (1), which is useful as an organic semiconductor device, such as an organic thin film transistor element, and the invention also relates to method for producing the thienopyridine derivative represented by formula (1):
    Type: Application
    Filed: March 14, 2011
    Publication date: January 3, 2013
    Applicants: Kuraray Co. Ltd., Hiroshima University
    Inventors: Joji Ohshita, Yutaka Harima, Takashi Sugioka, Koichi Kanehira
  • Publication number: 20130001472
    Abstract: To provide a novel material exhibiting excellent light-emitting characteristics using a heavy metal element having relatively abundant reserve.
    Type: Application
    Filed: March 4, 2011
    Publication date: January 3, 2013
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, YAMAGUCHI UNIVERSITY, HIROSHIMA UNIVERSITY
    Inventors: Joji Ohshita, Toshihiro Murafuji, Yusuke Kuramochi, Takashi Kaikoh, Hideyuki Higashimura