Patents by Inventor Akihiro Kurima

Akihiro Kurima 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).

  • Polymer electrolyte membrane, membrane electrode assembly, polymer electrolyte fuel cell, and process for producing polymer electrolyte membrane
    Patent number: 11728500
    Abstract: Provided is a polymer electrolyte membrane comprising: (a) a polyelectrolyte having an ion exchange capacity of from 0.5 to 3.0 meq/g; and (b) at least one scandium compound selected from the group consisting of scandium oxide, scandium acetate, scandium sulfate, scandium nitrate, and scandium carbonate, wherein a polyethylene glycol (PEG)-derived compound in the polymer electrolyte membrane has a total content of 10 ppm or less.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: August 15, 2023
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuichi Inoue, Hitoshi Shobukawa, Naoki Sakamoto, Akihiro Kurima
  • POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, POLYMER ELECTROLYTE FUEL CELL, AND PROCESS FOR PRODUCING POLYMER ELECTROLYTE MEMBRANE
    Publication number: 20220238902
    Abstract: Provided is a polymer electrolyte membrane comprising: (a) a polyelectrolyte having an ion exchange capacity of from 0.5 to 3.0 meq/g; and (b) at least one scandium compound selected from the group consisting of scandium oxide, scandium acetate, scandium sulfate, scandium nitrate, and scandium carbonate, wherein a polyethylene glycol (PEG)-derived compound in the polymer electrolyte membrane has a total content of 10 ppm or less.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 28, 2022
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuichi INOUE, Hitoshi SHOBUKAWA, Naoki SAKAMOTO, Akihiro KURIMA
  • Gas separation membranes with intermixed layers
    Patent number: 10005043
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 26, 2018
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Gas Separation Membranes with Intermixed Layers
    Publication number: 20170296981
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 19, 2017
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Gas separation membranes with intermixed layers
    Patent number: 9731248
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 15, 2017
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Curable compositions and membranes
    Patent number: 9700848
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer, a portion of which is present within the support and a portion of which is outside of the support; and c) a discriminating layer on the gutter layer; wherein: (i) the portion of the gutter layer outside of the support has an average thickness (GLe) of 10 nm to 900 nm; and (ii) the portion of the gutter layer present within the support has an average thickness (GLi) of 10% to 350% of GLe.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 11, 2017
    Assignee: Fujifilm Manufacturing Europe B.V.
    Inventors: Takeshi Umehara, Shigehide Itoh, Petrus Van Kessel, Yujiro Itami, Masatoshi Nakanishi, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi
  • Curable Compositions and Membranes
    Publication number: 20150343389
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer, a portion of which is present within the support and a portion of which is outside of the support; and c) a discriminating layer on the gutter layer; wherein: (i) the portion of the gutter layer outside of the support has an average thickness (GLe) of 10 nm to 900 nm; and (ii) the portion of the gutter layer present within the support has an average thickness (GLi) of 10% to 350% of GLe.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 3, 2015
    Inventors: Takeshi UMEHARA, Shigehide ITOH, Petrus VAN KESSEL, Yujiro ITAMI, Masatoshi NAKANISHI, Hiroyuki NODA, Akihiro KURIMA, Kimiko IWAHASHI
  • Gas Separation Membranes with intermixed Layers
    Publication number: 20150143995
    Abstract: A composite membrane comprising: a) a porous support; b) a gutter layer; and c) a discriminating layer; wherein at least 10% of the discriminating layer is intermixed with the gutter layer.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 28, 2015
    Inventors: Takeshi Umehara, Masatoshi Nakanishi, Yujiro Itami, Hiroyuki Noda, Akihiro Kurima, Kimiko Iwahashi