Patents by Inventor Minoru Kotato

Minoru Kotato 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).

  • Patent number: 11205802
    Abstract: Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO2)2.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: December 21, 2021
    Assignees: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATION
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
  • Publication number: 20210066707
    Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 4, 2021
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hidekazu MIYAGI, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
  • Publication number: 20200144670
    Abstract: The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).
    Type: Application
    Filed: December 27, 2019
    Publication date: May 7, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki YOSHIDA, Yasuyuki SHIGEMATSU, Minoru KOTATO
  • Publication number: 20200036042
    Abstract: Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO2)2.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
  • Publication number: 20190393553
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki TOKUDA, Minoru KOTATO, Shinichi KINOSHITA
  • Patent number: 10476106
    Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: November 12, 2019
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
  • Patent number: 10468720
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki Tokuda, Minoru Kotato, Shinichi Kinoshita
  • Publication number: 20190334208
    Abstract: Disclosed herein is a nonaqueous electrolyte solution containing an electrolyte and a nonaqueous solvent, the nonaqueous electrolyte solution including a compound represented by formula (A) and: (1) at least one compound selected from a nitrile compound, an isocyanate compound, a difluorophosphate, a fluorosulfonate, a lithium bis(fluorosulfonyl)imide and a compound represented by the formula (B) below, or (2) a cyclic carbonate compound having a fluorine atom in an amount of 0.01% by mass to 50.0% by mass based on a total amount of the nonaqueous electrolyte solution. In formula (A), R1 to R3 represent optionally substituted organic groups having 1 to 20 carbon atoms, and in formula (B), R4, R5 and R6 independently represent an alkyl group, alkenyl group or alkynyl group having 1 to 12 carbon atoms that may be substituted with a halogen atom, and n represents an integer of 0 to 6.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 31, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Eiji Nakazawa, Yoichi Oohashi, Minoru Kotato, Takamichi Mitsui, Takayuki Aoshima, Takeshi Nakamura
  • Publication number: 20190288338
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Application
    Filed: May 29, 2019
    Publication date: September 19, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki TOKUDA, Minoru KOTATO, Shinichi KINOSHITA
  • Publication number: 20190252672
    Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts, and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
  • Patent number: 9947965
    Abstract: The object of the present invention is to provide a nonaqueous electrolyte secondary battery which has excellent balance of general performance with respect to performance including durability, capacity, resistance, and output characteristics. Provided is a nonaqueous electrolyte battery comprising a positive electrode and a negative electrode each being capable of occluding and releasing metal ions, and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains an electrolyte, a nonaqueous solvent, and at least one compound selected from the group consisting of a compound having a fluorosulfonyl structure (—SO2F), a difluorophosphate, and an isocyanate compound, and wherein the negative electrode has a negative electrode active material containing metal particles capable of alloying with Li and graphite particles.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 17, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Eiji Nakazawa, Youichi Oohashi, Minoru Kotato
  • Patent number: 9923238
    Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: March 20, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
  • Publication number: 20180019499
    Abstract: The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).
    Type: Application
    Filed: September 28, 2017
    Publication date: January 18, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki YOSHIDA, Yasuyuki SHIGEMATSU, Minoru KOTATO
  • Patent number: 9853326
    Abstract: An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 26, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyuki Tokuda, Minoru Kotato, Masahiro Takehara, Shinichi Kinoshita
  • Patent number: 9806375
    Abstract: The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: October 31, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroaki Yoshida, Yasuyuki Shigematsu, Minoru Kotato
  • Patent number: 9780409
    Abstract: The present invention is to provide: a nonaqueous-electrolyte battery excellent in terms of safety during overcharge and high-temperature storability; and a nonaqueous electrolytic solution which gives the battery. The present invention relates to a nonaqueous electrolytic solution comprising an electrolyte and a nonaqueous solvent, wherein the nonaqueous electrolytic solution comprises at least one of specific compounds.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 3, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kanako Takiguchi, Masamichi Onuki, Minoru Kotato, Ryo Yamaguchi, Takeshi Nakamura, Takayuki Aoshima
  • Publication number: 20170040593
    Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts; and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.
    Type: Application
    Filed: October 12, 2016
    Publication date: February 9, 2017
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
  • 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
  • Patent number: 9496585
    Abstract: The present invention relates to a nonaqueous electrolyte solution comprising a lithium salt and a nonaqueous organic solvent, wherein the nonaqueous electrolyte solution comprises a specific sulfonic acid ester.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: November 15, 2016
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Masamichi Onuki, Youichi Ohashi, Kazuki Watanabe
  • Publication number: 20160164143
    Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.
    Type: Application
    Filed: January 8, 2016
    Publication date: June 9, 2016
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi