Patents by Inventor Koji Fukamizu

Koji Fukamizu 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: 20240006668
    Abstract: The present disclosure relates to: a nonaqueous electrolytic solution containing a compound (A) represented by general formula (1) and an anion (B) represented by general formula (2), and having amass ratio [(A)/(B)] of 0.01 or more and 1.2 or less; and a nonaqueous electrolytic solution battery including a positive electrode having a positive electrode active material capable of absorbing and releasing lithium ions, a negative electrode, and the nonaqueous electrolytic solution.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Applicant: MU Ionic Solutions Corporation
    Inventors: Koji Fukamizu, Kazuhiro Miyoshi
  • Patent number: 11695155
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: July 4, 2023
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Hiroaki Yoshida, Daisuke Kawakami, Koji Fukamizu
  • Publication number: 20230155178
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
    Type: Application
    Filed: January 20, 2023
    Publication date: May 18, 2023
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Hiroaki YOSHIDA, Daisuke KAWAKAMI, Koji FUKAMIZU
  • Patent number: 11183679
    Abstract: Provided are: a negative electrode material for nonaqueous secondary batteries, which has a high capacity and exhibits excellent low-temperature input-output characteristics, charge-discharge rate characteristics, cycle characteristics, and the like; and a negative electrode for nonaqueous secondary batteries and a nonaqueous secondary battery, which include the negative electrode material. The negative electrode material for nonaqueous secondary batteries includes silicon oxide particles (A) and a carbon material (B), wherein the silicon oxide particles (A) contain zero-valent silicon atoms, and the carbon material (B) has a volume resistivity of less than 0.14 ?·cm at a powder density of 1.1 g/cm3.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: November 23, 2021
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Nobuyuki Ishiwatari, Shunsuke Yamada, Naoto Maru, Koji Fukamizu
  • Publication number: 20210207452
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
    Type: Application
    Filed: May 7, 2020
    Publication date: July 8, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki YOSHIDA, Daisuke KAWAKAMI, Koji FUKAMIZU
  • Patent number: 10777850
    Abstract: A nonaqueous electrolytic solution, containing an electrolyte, a nonaqueous solvent and an aromatic carboxylate ester of formula (1): wherein A1 is an optionally substituted aryl group, n1 is an integer of 1 or greater, R2 and R3 are a hydrogen atom, a halogen atom or an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, a1 is an integer of 1 or 2, and when a1 is 1, R1 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, a1 is 2, R1 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, n1 is 1, at least one of R2 and R3 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, and n1 is 2 and R2s and R3s are all hydrogen atoms, R1 is an optionally substituted aliphatic hydrocarbon group having 1 to 12 carbon atoms.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: September 15, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Sawa, Takashi Fujii, Kanako Ito, Koji Fukamizu, Ryo Yamaguchi, Hiromu Watanabe
  • Publication number: 20200263516
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
    Type: Application
    Filed: May 7, 2020
    Publication date: August 20, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki YOSHIDA, Daisuke KAWAKAMI, Koji FUKAMIZU
  • Patent number: 10734680
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is a non-aqueous electrolytic solution comprising an electrolyte and a non-aqueous solvent dissolving therein the electrolyte, wherein the non-aqueous electrolytic solution contains a compound represented by formula (1), and a non-aqueous electrolyte secondary battery comprising the non-aqueous electrolytic solution.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 4, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroaki Yoshida, Daisuke Kawakami, Koji Fukamizu
  • Publication number: 20190312257
    Abstract: Provided are: a negative electrode material for nonaqueous secondary batteries, which has a high capacity and exhibits excellent low-temperature input-output characteristics, charge-discharge rate characteristics, cycle characteristics, and the like; and a negative electrode for nonaqueous secondary batteries and a nonaqueous secondary battery, which include the negative electrode material. The negative electrode material for nonaqueous secondary batteries includes silicon oxide particles (A) and a carbon material (B), wherein the silicon oxide particles (A) contain zero-valent silicon atoms, and the carbon material (B) has a volume resistivity of less than 0.14 ?·cm at a powder density of 1.1 g/cm3.
    Type: Application
    Filed: May 22, 2019
    Publication date: October 10, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Nobuyuki ISHIWATARI, Shunsuke Yamada, Naoto Maru, Koji Fukamizu
  • Publication number: 20190051941
    Abstract: Objects of the invention are to provide nonaqueous electrolytic solutions that allow nonaqueous electrolyte secondary batteries to achieve improvements in initial battery characteristics and in battery characteristics after durability testing at the same time, and to provide nonaqueous electrolyte secondary batteries containing the nonaqueous electrolytic solutions.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 14, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei SAWA, Takashi FUJII, Kanako ITO, Koji FUKAMIZU, Ryo YAMAGUCHI, HIROMU WATANABE
  • Patent number: 10177414
    Abstract: A nonaqueous electrolytic solution, containing an electrolyte, a nonaqueous solvent, an aromatic carboxylate ester and a compound is provided. The compound is fluorine-containing cyclic carbonates, sulfur-containing organic compounds, phosphonate esters, cyano group-containing organic compounds, isocyanate group-containing organic compounds, silicon-containing compounds, aromatic compounds, cyclic compounds having a plurality of ether bonds, monofluorophosphate salts, difluorophosphate salts, borate salts, oxalate salts or fluorosulfonate salts.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: January 8, 2019
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Sawa, Takashi Fujii, Kanako Ito, Koji Fukamizu, Ryo Yamaguchi, Hiromu Watanabe
  • Patent number: 9553333
    Abstract: Provided are a nonaqueous electrolyte solution having improved durability properties in terms of cycling, storage and the like and improved discharge characteristic at a high current density, and a nonaqueous electrolyte battery that uses that nonaqueous electrolyte solution. The nonaqueous electrolyte solution containing a lithium salt and a nonaqueous solvent that dissolves the lithium salt, wherein the nonaqueous electrolyte solution contains a compound represented by formula (1) and at least one compound selected from the group consisting of a compound having a cyano group, a cyclic ester compound having a sulfur atom and a compound having an isocyanate group.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 24, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki Tokuda, Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Youichi Ohashi, Koji Fukamizu
  • Publication number: 20160322669
    Abstract: Objects of the invention are to provide nonaqueous electrolytic solutions that allow nonaqueous electrolyte secondary batteries to achieve improvements in initial battery characteristics and in battery characteristics after durability testing at the same time, and to provide nonaqueous electrolyte secondary batteries containing the nonaqueous electrolytic solutions.
    Type: Application
    Filed: July 14, 2016
    Publication date: November 3, 2016
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shuhei SAWA, Takashi FUJII, Kanako ITO, Koji FUKAMIZU, Ryo YAMAGUCHI, Hiromu WATANABE
  • Publication number: 20160294008
    Abstract: A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 6, 2016
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki YOSHIDA, Daisuke KAWAKAMI, Koji FUKAMIZU
  • Publication number: 20150044554
    Abstract: Provided are a nonaqueous electrolyte battery having improved durability properties such as cycle and storage properties, and improved load characteristic, and a nonaqueous electrolyte solution that is appropriate for the nonaqueous electrolyte battery. The nonaqueous electrolyte solution contains a lithium salt and a nonaqueous solvent that dissolves the lithium salt. The nonaqueous electrolyte solution also contains a compound represented by formula (1) and a specific compound that acts in conjunction with the aforementioned compound.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki TOKUDA, Akemi HOSOKAWA, Shuhei SAWA, Youichi OHASHI, Koji FUKAMIZU, Minoru KOTATO, Daisuke KAWAKAMI
  • Publication number: 20130244122
    Abstract: This invention relates to a nonaqueous electrolytic solution containing an electrolyte, a nonaqueous solvent, and a compound represented by formula (3): wherein R1 represents an optionally fluorine-atom substituted hydrocarbon group having 1-12 carbon atoms; R2 to R6 each independently represent a hydrogen atom, a fluorine atom, or an optionally fluorine-atom substituted alkyl group having 1-12 carbon atoms, such that at least one of R2 to R6 represents an optionally fluorine-atom substituted alkyl group having 2 or more carbon atoms; and n represents an integer of 0 or 1, such that when n is 1, at least one of R2 to R6 represents an optionally fluorine-atom substituted alkyl group having 5 or more carbon atoms.
    Type: Application
    Filed: April 26, 2013
    Publication date: September 19, 2013
    Inventors: Masamichi Onuki, Minoru Kotato, Koji Fukamizu, Yumiko Machida, Youichi Ohashi
  • Publication number: 20120219866
    Abstract: This invention relates to a nonaqueous electrolytic solution including a lithium salt and an organic solvent containing: a carbonate and/or an ester in a total proportion exceeding 90% by volume; and a fluorine-substituted aromatic ester represented by formula (I) in an amount of 0.01%-10% by weight based on the weight of the electrolytic solution: Xn-Ph-OCOR??(1). The invention also relates to a nonaqueous electrolytic solution including an electrolyte, a nonaqueous solvent, and a compound represented by formula (3): The invention also relates to a nonaqueous-electrolyte battery including a nonaqueous electrolytic solution as described above.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 30, 2012
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Masamichi Onuki, Minoru Kotato, Koji Fukamizu, Yumiko Machida, Youichi Ohashi