Patents by Inventor Toshiyuki Kawai

Toshiyuki Kawai 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: 20220281890
    Abstract: The present invention provides a pharmaceutical composition containing the following compound having antiviral action: P is hydrogen or a group to form a prodrug; A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is each independently CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A4, is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl, or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A and R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together with an adjacent carbon atom to form non-aromatic carbocycle or non-aromatic heterocycle; R1 is fluorine; m is any integer of 1 to 2; and n is any integer of 1 to 2.
    Type: Application
    Filed: March 8, 2022
    Publication date: September 8, 2022
    Applicant: Shionogi & Co., Ltd.
    Inventors: Makoto KAWAI, Kenji TOMITA, Toshiyuki AKIYAMA, Azusa OKANO, Masayoshi MIYAGAWA
  • Patent number: 11437648
    Abstract: Provided is a nonaqueous electrolyte solution to which lithium tetraborate is added, for a lithium secondary battery, the nonaqueous electrolyte solution being capable of reducing the resistance of a lithium secondary battery. A nonaqueous electrolyte solution for a lithium secondary battery disclosed herein contains lithium tetraborate as a first additive, and a difluorophosphate salt as a second additive.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: September 6, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshiyuki Kawai, Hiroto Asano
  • Patent number: 11043699
    Abstract: The present disclosure provides a nonaqueous electrolyte solution that is used in a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte solution contains a fluorinated solvent, a predetermined additive A and a predetermined additive B. A ratio (CA/CB) of concentration CA (mol/L) of the additive A and concentration CB (mol/L) of the additive B lies in a range of 1 to 30.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: June 22, 2021
    Assignees: Toyota Jidosha Kabushiki Kaisha, Daikin Industries, Ltd.
    Inventors: Toshiyuki Kawai, Hiroto Asano, Shigeaki Yamazaki, Shinichi Kinoshita
  • Patent number: 10950896
    Abstract: A nonaqueous electrolyte solution used for a nonaqueous electrolyte secondary battery includes a cyclic carbonate and a fluorinated carboxylate ester including two fluorine atoms on an alpha carbon atom derived from a carboxylic acid as a nonaqueous solvent.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: March 16, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroto Asano, Toshiyuki Kawai, Shinpei Kondo, Shigeaki Yamazaki, Shinichi Kinoshita
  • Patent number: 10923764
    Abstract: The present invention provides an electrolyte solution in which a decrease in capacity retention is suppressed and an increase in gas production is suppressed even when stored at high temperatures. Provided is an electrolyte solution containing: a compound (1) represented by formula (1): CF3CFX11COOR11, wherein X11 is a hydrogen atom, a fluorine atom, or a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms, and R11 is a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms; a fluorinated carbonate; and a cyclic acid anhydride.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 16, 2021
    Assignees: DAIKIN INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeaki Yamazaki, Shinichi Kinoshita, Hiroto Asano, Toshiyuki Kawai
  • Patent number: 10890625
    Abstract: A battery model includes a series connection of a direct current resistance model, a charge transfer resistance model derived from the Butler-Volmer equation, and a diffusion resistance model. A battery state estimating device includes a storage unit and a parameter calculating unit. The storage unit stores information on the resistance parameter related to the resistance component of the diffusion resistance model, the time constant parameter related to the time constant of the diffusion resistance model, and the charge parameter of the charge transfer resistance model, in association with temperature information of the secondary battery. The parameter calculating unit calculates each of the parameters corresponding to the detected temperature value based on a detected temperature value of the secondary battery and the information stored in the storage unit.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: January 12, 2021
    Assignee: DENSO CORPORATION
    Inventors: Toshiyuki Kawai, Keiichi Kato, Yuji Koike, Hideaki Tanaka, Shuntaro Kono
  • Patent number: 10818972
    Abstract: Provided is an electrolyte solution for a lithium secondary battery, which can lower the resistance of a lithium secondary battery and impart the lithium secondary battery with high cycle characteristics. The electrolyte solution for a lithium secondary battery disclosed here includes an electrolyte salt consisting essentially of a lithium imide salt, a solvent containing methyl difluoroacetate, and an unsaturated carboxylic acid anhydride compound represented by formula (1) below as an additive (in the formula, R1 and R2 each independently denote a hydrogen atom, a fluorine atom, or an alkyl group that may be fluorine-substituted, or R1 and R2 bond to each other to form a ring structure).
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: October 27, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshiyuki Kawai, Hiroto Asano
  • Patent number: 10784537
    Abstract: Provided is a lithium ion secondary battery with reduced battery resistance, this lithium ion secondary battery using a positive electrode active material with a high potential and a phosphate-based solid electrolyte. The lithium ion secondary battery disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode has a positive electrode active material layer including a positive electrode active material having an operation upper limit potential of at least 4.6 V relative to metallic lithium and a phosphate-based solid electrolyte. The nonaqueous electrolytic solution includes a boric acid ester including a fluorine atom.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Toshiyuki Kawai
  • Publication number: 20200243908
    Abstract: Provided is a nonaqueous electrolyte solution to which lithium tetraborate is added, for a lithium secondary battery, the nonaqueous electrolyte solution being capable of reducing the resistance of a lithium secondary battery. A nonaqueous electrolyte solution for a lithium secondary battery disclosed herein contains lithium tetraborate as a first additive, and a difluorophosphate salt as a second additive.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 30, 2020
    Inventors: Toshiyuki Kawai, Hiroto Asano
  • Patent number: 10663524
    Abstract: A battery state estimating apparatus includes an updating unit. The updating unit updates a charge-transfer impedance model in a battery model of a secondary battery, which is a series connection of a DC resistance model, a charge-transfer impedance model, and an diffusion impedance model, using the amount of change in a measurement value of a current flowing through the secondary such that a first relationship between the current flowing through the secondary battery and a voltage across the charge-transfer resistance approaches a second relationship between an actual value of the current and an actual value of the voltage across the charge-transfer resistance. The first relationship between the current flowing through the secondary battery and the voltage across the charge-transfer resistance is defined based on the Butler-Volmer equation. A state estimator estimates a state of the secondary battery based on the battery model including the updated charge-transfer impedance model.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: May 26, 2020
    Assignee: DENSO CORPORATION
    Inventors: Toshiyuki Kawai, Keiichi Kato, Yuuji Koike
  • Patent number: 10527677
    Abstract: A battery state estimation apparatus estimates a state of a secondary battery based on a battery model thereof. The battery model includes a DC resistance model, a reaction resistance model, and a diffusion resistance model. The apparatus includes a DC information storage section which stores information on the DC resistance related to temperature of the secondary battery, a reaction information storage section which stores information on the reaction resistance parameter related to the temperature, a diffusion information storage section which stores information on each of the first and second parameters related to the temperature, and a state estimation section which calculates the DC resistance, the reaction resistance parameter, and the first and second parameters from the stored information, by using the temperature as input, and estimates the state of the secondary battery based on the DC resistance, reaction resistance parameter, and first and second parameters.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: January 7, 2020
    Assignee: DENSO CORPORATION
    Inventors: Toshiyuki Kawai, Keiichi Kato, Yuuji Koike
  • Publication number: 20190123387
    Abstract: Provided is an electrolyte solution for a lithium secondary battery, which can lower the resistance of a lithium secondary battery and impart the lithium secondary battery with high cycle characteristics. The electrolyte solution for a lithium secondary battery disclosed here includes an electrolyte salt consisting essentially of a lithium imide salt, a solvent containing methyl difluoroacetate, and an unsaturated carboxylic acid anhydride compound represented by formula (1) below as an additive (in the formula, R1 and R2 each independently denote a hydrogen atom, a fluorine atom, or an alkyl group that may be fluorine-substituted, or R1 and R2 bond to each other to form a ring structure).
    Type: Application
    Filed: October 18, 2018
    Publication date: April 25, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshiyuki KAWAI, Hiroto ASANO
  • Patent number: 10224570
    Abstract: The invention provides a lithium ion secondary battery which exhibits excellent output characteristics and in which decline in the power characteristics is suppressed for a long period of time even after charge-discharge cycling. The lithium ion secondary battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte solution. The positive electrode has a maximum achievable potential of 4.5 V or more versus metallic lithium. The nonaqueous electrolyte solution includes (A) a nonfluorinated cyclic carbonate, (B) a fluorinated cyclic carbonate, and (C) a fluorinated acyclic carbonate. The nonfluorinated cyclic carbonate (A) accounts for more than 10% by volume of (A), (B) and (C) combined.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: March 5, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Abe, Toshiyuki Kawai, Akira Kouyama
  • Publication number: 20190064276
    Abstract: A battery model includes a series connection of a direct current resistance model, a charge transfer resistance model derived from the Butler-Volmer equation, and a diffusion resistance model. A battery state estimating device includes a storage unit and a parameter calculating unit. The storage unit stores information on the resistance parameter related to the resistance component of the diffusion resistance model, the time constant parameter related to the time constant of the diffusion resistance model, and the charge parameter of the charge transfer resistance model, in association with temperature information of the secondary battery. The parameter calculating unit calculates each of the parameters corresponding to the detected temperature value based on a detected temperature value of the secondary battery and the information stored in the storage unit.
    Type: Application
    Filed: January 20, 2017
    Publication date: February 28, 2019
    Applicant: DENSO CORPORATION
    Inventors: Toshiyuki KAWAI, Keiichi KATO, Yuji KOIKE, Hideaki TANAKA, Shuntaro KONO
  • Patent number: 10094882
    Abstract: In an apparatus, a circuit model includes a DC resistance model, and a reaction impedance model having a nonlinear relationship between a first potential difference across a reaction resistance and a current flowing through the secondary battery. The nonlinearly relationship depends on a temperature of the secondary battery. The circuit model includes a diffusion impedance model. The apparatus predicts a future remaining voltage across the secondary battery at a future timing when a predetermined duration will have elapsed since a prediction time. The apparatus calculates a future polarization voltage across the secondary battery at the future timing. The apparatus predicts a target power parameter of the secondary battery at the future timing according to the future remaining voltage, the future polarization voltage, a first potential difference across the reaction resistance, and a second potential difference across the DC resistance model.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 9, 2018
    Assignee: DENSO CORPORATION
    Inventors: Toshiyuki Kawai, Yuuji Koike, Keiichi Kato
  • Publication number: 20180219259
    Abstract: The present disclosure provides a nonaqueous electrolyte solution that is used in a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte solution contains a fluorinated solvent, a predetermined additive A and a predetermined additive B. A ratio (CA/CB) of concentration CA (mol/L) of the additive A and concentration CB (mol/L) of the additive B lies in a range of 1 to 30.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Applicants: Toyota Jidosha Kabushiki Kaisha, Daikin Industries, Ltd.
    Inventors: Toshiyuki Kawai, Hiroto Asano, Shigeaki Yamazaki, Shinichi Kinoshita
  • Publication number: 20180183103
    Abstract: Provided is a lithium ion secondary battery with reduced battery resistance, this lithium ion secondary battery using a positive electrode active material with a high potential and a phosphate-based solid electrolyte. The lithium ion secondary battery disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode has a positive electrode active material layer including a positive electrode active material having an operation upper limit potential of at least 4.6 V relative to metallic lithium and a phosphate-based solid electrolyte. The nonaqueous electrolytic solution includes a boric acid ester including a fluorine atom.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Toshiyuki KAWAI
  • Publication number: 20180183097
    Abstract: The present invention provides an electrolyte solution in which a decrease in capacity retention is suppressed and an increase in gas production is suppressed even when stored at high temperatures. Provided is an electrolyte solution containing: a compound (1) represented by formula (1): CF3CFX11COOR11, wherein X11 is a hydrogen atom, a fluorine atom, or a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms, and R11 is a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms; a fluorinated carbonate; and a cyclic acid anhydride.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 28, 2018
    Applicants: DAIKIN INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeaki YAMAZAKI, Shinichi KINOSHITA, Hiroto ASANO, Toshiyuki KAWAI
  • Publication number: 20180183105
    Abstract: A nonaqueous electrolyte solution used for a nonaqueous electrolyte secondary battery includes a cyclic carbonate and a fluorinated carboxylate ester including two fluorine atoms on an alpha carbon atom derived from a carboxylic acid as a nonaqueous solvent.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 28, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Daikin Industries, Ltd.
    Inventors: Hiroto ASANO, Toshiyuki KAWAI, Shinpei KONDO, Shigeaki YAMAZAKI, Shinichi KINOSHITA
  • Publication number: 20180045788
    Abstract: A battery state estimating apparatus includes an updating unit. The updating unit updates a charge-transfer impedance model in a battery model of a secondary battery, which is a series connection of a DC resistance model, a charge-transfer impedance model, and an diffusion impedance model, using the amount of change in a measurement value of a current flowing through the secondary such that a first relationship between the current flowing through the secondary battery and a voltage across the charge-transfer resistance approaches a second relationship between an actual value of the current and an actual value of the voltage across the charge-transfer resistance. The first relationship between the current flowing through the secondary battery and the voltage across the charge-transfer resistance is defined based on the Butler-Volmer equation. A state estimator estimates a state of the secondary battery based on the battery model including the updated charge-transfer impedance model.
    Type: Application
    Filed: March 7, 2016
    Publication date: February 15, 2018
    Applicant: DENSO CORPORATION
    Inventors: Toshiyuki KAWAI, Keiichi KATO, Yuuji KOIKE