Patents by Inventor Yusuke YAMAHATA

Yusuke YAMAHATA 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).

  • Non-Aqueous Lithium Power Storage Element
    Publication number: 20220393147
    Abstract: A non-aqueous lithium power storage element that includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, the positive electrode having a positive electrode collector and a positive electrode active material layer that includes active carbon, and the non-aqueous lithium power storage element having configuration (1) and/or (2). (1) The negative electrode includes a negative electrode collector and a negative electrode active material layer (2) The non-aqueous electrolyte contains (A) LiPF6 and/or LiBF4, (B) an imide lithium salt, and (C) an oxalate-complex lithium salt, the ratio of the mass of component (C) to the total mass of components (A) and (B) being 1.0-10.0 mass %.
    Type: Application
    Filed: October 2, 2020
    Publication date: December 8, 2022
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuaki Takada, Kazuteru Umetsu, Fumiya Nakamura, Yusuke Yamahata, Yuima Kimura, Tadashi Matsushita
  • Nonaqueous lithium-type power storage element
    Patent number: 11387052
    Abstract: A nonaqueous lithium-type power storage element comprising a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions. The negative electrode has: a negative electrode collector; and a negative electrode active material layer containing a negative electrode active material, said negative electrode active material layer being provided on one surface or both surfaces of the negative electrode collector. The negative electrode active material contains a carbonaceous material capable of storing or releasing lithium ions. Furthermore, the positive electrode has: a positive electrode collector; and a positive electrode active material layer containing a cathode active material, said positive electrode active material layer being provided on one surface or both surfaces of the positive electrode collector. The positive electrode active material contains activated carbon.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 12, 2022
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuima Kimura, Kazuteru Umetsu, Hitoshi Morita, Nobuhiro Okada, Yuichiro Hirakawa, Yusuke Yamahata
  • Nonaqueous Lithium-Type Power Storage Element
    Publication number: 20200219665
    Abstract: A nonaqueous lithium-type power storage element comprising a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions. The negative electrode has: a negative electrode collector; and a negative electrode active material layer containing a negative electrode active material, said negative electrode active material layer being provided on one surface or both surfaces of the negative electrode collector. The negative electrode active material contains a carbonaceous material capable of storing or releasing lithium ions. Furthermore, the positive electrode has: a positive electrode collector; and a positive electrode active material layer containing a cathode active material, said positive electrode active material layer being provided on one surface or both surfaces of the positive electrode collector. The positive electrode active material contains activated carbon.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuima Kimura, Kazuteru Umetsu, Hitoshi Morita, Nobuhiro Okada, Yuichiro Hirakawa, Yusuke Yamahata
  • Nonaqueous lithium-type power storage element
    Patent number: 10636582
    Abstract: The disclosure provides a nonaqueous lithium-type power storage element having a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 28, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuima Kimura, Kazuteru Umetsu, Hitoshi Morita, Nobuhiro Okada, Yuichiro Hirakawa, Yusuke Yamahata
  • 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
  • Non-aqueous lithium-type power storage element
    Patent number: 10242809
    Abstract: A non-aqueous lithium-type power storage element comprising an electrode laminate body and a non-aqueous electrolyte being housed in an external body, the electrode laminate body having a negative electrode body, a positive electrode body and a separator.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 26, 2019
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhiro Okada, Yusuke Yamahata, Kensuke Niimura, Yuima Kimura, Osamu Saito
  • Nonaqueous Lithium-Type Power Storage Element
    Publication number: 20190027320
    Abstract: The disclosure provides a nonaqueous lithium-type power storage element having a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions.
    Type: Application
    Filed: January 20, 2017
    Publication date: January 24, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuima Kimura, Kazuteru Umetsu, Hitoshi Morita, Nobuhiro Okada, Yuichiro Hirakawa, Yusuke Yamahata
  • 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
  • Non-Aqueous Lithium-Type Power Storage Element
    Publication number: 20160300667
    Abstract: A non-aqueous lithium-type power storage element comprising an electrode laminate body and a non-aqueous electrolyte being housed in an external body, the electrode laminate body having a negative electrode body, a positive electrode body and a separator.
    Type: Application
    Filed: November 18, 2014
    Publication date: October 13, 2016
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhiro OKADA, Yusuke YAMAHATA, Kensuke NIIMURA, Yuima KIMURA, Osamu SAITO