Patents by Inventor Tomohisa Yoshioka

Tomohisa Yoshioka 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).

  • Composite separation membrane
    Patent number: 11607652
    Abstract: The objective of the present invention is to provide a composite separation membrane which is excellent in not only a liquid permeable performance and a separation performance relatively but also a durability and which is particularly useful as a membrane for liquid treatment, and a method for treating a liquid by using the composite separation membrane. The composite separation membrane according to the present invention is characterized in comprising a supporting base material and a complex layer, wherein the complex layer is placed on the supporting base material, the complex layer comprises oxidized metal nanosheets, graphene oxide and an alkanolamine, and at least one of the alkanolamine is present between the oxidized metal nanosheets.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 21, 2023
    Assignee: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
    Inventors: Keizo Nakagawa, Misato Kunimatsu, Tomohiro Sera, Takuji Shintani, Tomohisa Yoshioka, Hideto Matsuyama
  • COMPOSITE SEPARATION MEMBRANE
    Publication number: 20210237004
    Abstract: The objective of the present invention is to provide a composite separation membrane which is excellent in not only a liquid permeable performance and a separation performance relatively but also a durability and which is particularly useful as a membrane for liquid treatment, and a method for treating a liquid by using the composite separation membrane. The composite separation membrane according to the present invention is characterized in comprising a supporting base material and a complex layer, wherein the complex layer is placed on the supporting base material, the complex layer comprises oxidized metal nanosheets, graphene oxide and an alkanolamine, and at least one of the alkanolamine is present between the oxidized metal nanosheets.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 5, 2021
    Applicant: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
    Inventors: Keizo NAKAGAWA, Misato KUNIMATSU, Tomohiro SERA, Takuji SHINTANI, Tomohisa YOSHIOKA, Hideto MATSUYAMA
  • Composite separation membrane and separation membrane element using the same
    Patent number: 10350553
    Abstract: The present invention provides a composite separation membrane with improved separation performance, particularly with an increased permeation flux. The composite separation membrane of the present invention includes a porous support (2) and a separation functional layer (1) formed on this support (2). The separation functional layer (1) is a polyamide membrane having a “double-folded structure” including a first layer portion (11) with a plurality of projections (15a, (15b . . . ) and a second layer portion (12) that covers at least one or some (15c and 15d) of these projections. Some projections (15a and 15b) of the first layer portion (11) extend upward and branch to form the second layer portion (12). There is a vacant space (13) between the first layer portion (11) and the second layer portion (12).
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 16, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takashi Kamada, Takuji Shintani, Toshinori Tsuru, Tomohisa Yoshioka, Chunlong Kong
  • COMPOSITE SEPARATION MEMBRANE AND SEPARATION MEMBRANE ELEMENT USING THE SAME
    Publication number: 20130037482
    Abstract: The present invention provides a composite separation membrane with improved separation performance, particularly with an increased permeation flux. The composite separation membrane of the present invention includes a porous support (2) and a separation functional layer (1) formed on this support (2). The separation functional layer (1) is a polyamide membrane having a “double-folded structure” including a first layer portion (11) with a plurality of projections (15a, (15b . . . ) and a second layer portion (12) that covers at least one or some (15c and 15d) of these projections. Some projections (15a and 15b) of the first layer portion (11) extend upward and branch to form the second layer portion (12). There is a vacant space (13) between the first layer portion (11) and the second layer portion (12).
    Type: Application
    Filed: February 16, 2011
    Publication date: February 14, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi Kamada, Takuji Shintani, Toshinori Tsuru, Tomohisa Yoshioka, Chunlong Kong