Patents by Inventor Hidefumi Takami

Hidefumi Takami 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).

  • Diaphragm for alkaline water electrolysis, alkaline water electrolysis device, method for producing hydrogen, and method for producing diaphragm for alkaline water electrolysis
    Patent number: 10975483
    Abstract: The diaphragm for alkaline water electrolysis according to the present invention comprises a porous polymer membrane, the porous polymer membrane comprising a polymer resin and hydrophilic inorganic particles. A porosity of the porous polymer membrane is 30% or more and 60% or less, average pore sizes at both surfaces of the porous polymer membrane is 0.5 ?m or more and 2.0 ?m or less, and a ratio of a mode particle size of the hydrophilic inorganic particles to the average pore size of the porous polymer membrane (mode particle size/average pore size) is 2.0 or more.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: April 13, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yusuke Suzuki, Kenji Nakagawa, Hidefumi Takami, Norikazu Fujimoto
  • Nonaqueous lithium-type power storage element
    Patent number: 10446847
    Abstract: A non-aqueous lithium-type power storage element obtained by a non-aqueous liquid electrolyte and an electrode laminate having a negative electrode body, a positive electrode body, and a separator being accommodated in an exterior body, wherein: the negative electrode body includes a negative electrode current collector and a negative electrode active material including a carbon material capable of occluding and releasing lithium ions.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 15, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhiro Okada, Yuima Kimura, Yusuke Yamahata, Osamu Saito, Kensuke Niimura, Hidefumi Takami
  • DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS, ALKALINE WATER ELECTROLYSIS DEVICE, METHOD FOR PRODUCING HYDROGEN, AND METHOD FOR PRODUCING DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS
    Publication number: 20180073155
    Abstract: The diaphragm for alkaline water electrolysis according to the present invention comprises a porous polymer membrane, the porous polymer membrane comprising a polymer resin and hydrophilic inorganic particles. A porosity of the porous polymer membrane is 30% or more and 60% or less, average pore sizes at both surfaces of the porous polymer membrane is 0.5 ?m or more and 2.0 ?m or less, and a ratio of a mode particle size of the hydrophilic inorganic particles to the average pore size of the porous polymer membrane (mode particle size/average pore size) is 2.0 or more.
    Type: Application
    Filed: March 18, 2016
    Publication date: March 15, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yusuke SUZUKI, Kenji NAKAGAWA, Hidefumi TAKAMI, Norikazu FUJIMOTO
  • Nonaqueous Lithium-Type Power Storage Element
    Publication number: 20170207459
    Abstract: A non-aqueous lithium-type power storage element obtained by a non-aqueous liquid electrolyte and an electrode laminate having a negative electrode body, a positive electrode body, and a separator being accommodated in an exterior body, wherein: the negative electrode body includes a negative electrode current collector and a negative electrode active material including a carbon material capable of occluding and releasing lithium ions.
    Type: Application
    Filed: July 8, 2015
    Publication date: July 20, 2017
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhiro Okada, Yuima Kimura, Yusuke Yamahata, Osamu Saito, Kensuke Niimura, Hidefumi Takami