Patents by Inventor Kenzou Takahashi

Kenzou Takahashi 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: 20210265664
    Abstract: An electrolyte solution containing a compound represented by formula (1) and a compound represented, for example, by formula (11-1), the formula (1) being: wherein M101 is P or P?O; R101 is a group such as a C1-C11 alkylsilyloxy group; n101 is an oxidation number of M101 minus 1 or an oxidation number of M101 minus 3; and R102 to R104 are each individually a group such as a C1-C11 alkyl group; the formula (11-1) being: wherein R111 and R112 are the same as or different from each other and are each an atom or group such as a hydrogen atom; and R113 is a group such as an alkyl group free from a fluorine atom.
    Type: Application
    Filed: March 18, 2019
    Publication date: August 26, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiko KUWAJIMA, Tomoya HIDAKA, Masakazu KINOSHITA, Yuuki SUZUKI, Toshiharu SHIMOOKA, Hisako NAKAMURA, Takaya YAMADA, Shigeaki YAMAZAKI, Akiyoshi YAMAUCHI, Kotaro HAYASHI, Yoshihiro YAMAMOTO, Kenzou TAKAHASHI
  • Publication number: 20210246098
    Abstract: An electrolyte solution containing a compound represented by the following formula (1).
    Type: Application
    Filed: January 9, 2019
    Publication date: August 12, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiko KUWAJIMA, Akiyoshi YAMAUCHI, Kotaro HAYASHI, Hisako NAKAMURA, Toshiharu SHIMOOKA, Takaya YAMADA, Yoshihiro YAMAMOTO, Shigeaki YAMAZAKI, Kenzou TAKAHASHI
  • Publication number: 20210234201
    Abstract: An electrolyte solution containing at least one compound (1) selected from a compound represented by the following formula (1-1) and a compound represented by the following formula (1-2), the formula (1-1) being: wherein R111 to R113 are each individually a C1-C4 linear alkyl group, the formula (1-2) being: wherein R121 to R123 are each individually a C1-C4 linear alkyl group.
    Type: Application
    Filed: April 12, 2019
    Publication date: July 29, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya HIDAKA, Masakazu KINOSHITA, Yoshiko KUWAJIMA, Takaya YAMADA, Shigeaki YAMAZAKI, Yuuki SUZUKI, Kenzou TAKAHASHI
  • Publication number: 20210194057
    Abstract: An electrolyte solution containing lithium ethyl sulfate and ethyl sulfate. The lithium ethyl sulfate is present in an amount of 0.1 to 2.0% by mass relative to the electrolyte solution. The lithium ethyl sulfate and the ethyl sulfate give a mass ratio of the lithium ethyl sulfate to the ethyl sulfate of 80 to 1500. Also disclosed is an electrochemical device and lithium ion secondary battery containing the electrolyte solution, a module including the electrochemical device and a method for producing lithium ethyl sulfate.
    Type: Application
    Filed: September 13, 2018
    Publication date: June 24, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki YAMAZAKI, Masakazu KINOSHITA, Yoshiko KUWAJIMA, Kenzou TAKAHASHI
  • Patent number: 11043698
    Abstract: An electrolyte solution whose residual capacity is less likely to decrease and whose percentage increase in resistance is less likely to change even after stored at high temperature. The electrolyte solution contains a compound (1) represented by the following formula (1): R11CFX11(CH2)n11COOR12 wherein R11 is H, F, a C1-C3 non-fluorinated alkyl group, or a C1-C3 fluorinated alkyl group; X11 is H or F; R12 is a C1-C3 non-fluorinated alkyl group or a C1-C3 fluorinated alkyl group; and n11 is an integer of 0 to 3; a fluorinated carbonate; and a specific additive.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 22, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki Yamazaki, Kenzou Takahashi, Hiroyuki Arima, Hideo Sakata, Masakazu Kinoshita, Shinichi Kinoshita
  • Publication number: 20210119256
    Abstract: An electrolyte solution containing at least one compound (1) selected from the group consisting of a compound represented by the following formula (1-1) (wherein R111 to R113 are each individually a C1-C4 linear or branched alkyl group, and at least one selected from R111 to R113 is a C1-C4 branched alkyl group) and a compound represented by the following formula (1-2) (wherein R121 to R123 are each individually a C1-C4 linear or branched alkyl group, and at least one selected from R121 to R123 is a C1-C4 branched alkyl group).
    Type: Application
    Filed: April 11, 2019
    Publication date: April 22, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya HIDAKA, Masakazu KINOSHITA, Yoshiko KUWAJIMA, Takaya YAMADA, Shigeaki YAMAZAKI, Kenzou TAKAHASHI, Yuuki SUZUKI
  • Patent number: 10978742
    Abstract: An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage. The electrolyte solution contains a fluorinated acyclic carbonate and a metal salt having a specific structure. The fluorinated acyclic carbonate is represented by CF3—OCOO—R11 (wherein R11 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group) or CFH2—OCOO—R12 (wherein R12 is a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group).
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 13, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu Kinoshita, Kenzou Takahashi, Hideo Sakata, Shigeaki Yamazaki, Hiroyuki Arima, Shinichi Kinoshita
  • Publication number: 20210043974
    Abstract: An electrolyte solution containing a compound (1) represented by the formula (1), (wherein R101 and R102 are each individually a substituent such as a C1-C7 alkyl group, and the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group) and at least one compound (11) selected from compounds such as a compound represented by formula (11-1) (wherein R111 and R112 are the same as or different from each other and are each a hydrogen atom or the like, and R113 is an alkyl group free from a fluorine atom or the like):
    Type: Application
    Filed: March 11, 2019
    Publication date: February 11, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Tomoya HIDAKA, Toshiharu SHIMOOKA, Shigeaki YAMAZAKI, Hisako NAKAMURA, Takaya YAMADA, Yuuki SUZUKI, Yoshiko KUWAJIMA, Kenzou TAKAHASHI, Akiyoshi YAMAUCHI, Kotaro HAYASHI
  • Publication number: 20210028492
    Abstract: An electrolyte solution containing a compound represented by the following formula (1).
    Type: Application
    Filed: March 11, 2019
    Publication date: January 28, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Tomoya HIDAKA, Yoshiko KUWAJIMA, Yuuki SUZUKI, Akiyoshi YAMAUCHI, Kotaro HAYASHI, Shigeaki YAMAZAKI, Kenzou TAKAHASHI, Takaya YAMADA
  • Publication number: 20210005933
    Abstract: An electrolyte solution containing LiFSO3 and a compound (1) represented by the following formula (1): LiZ, wherein Z is PF6, BF4, N(FSO2)2, N(CF3SO2)2, N(C2F5SO2)2, PO2F2, or B(C2O4)2. The electrolyte solution has a ratio [FSO3]/[Z] of a molar content of FSO3 [FSO3] to a molar content of Z [Z] of 3 to 1000. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the electrochemical device.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 7, 2021
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Masakazu KINOSHITA, Yuuki SUZUKI, Shigeaki YAMAZAKI, Kenzou TAKAHASHI, Tomoya HIDAKA, Yoshiko KUWAJIMA, Akiyoshi YAMAUCHI, Kotaro HAYASHI
  • Publication number: 20200373623
    Abstract: An electrolyte solution containing a compound (1) represented by the following formula (1): wherein R101s are the same as or different from each other and are each a C1-C6 hydrocarbon group optionally containing an unsaturated bond, and n101 is an integer of 2 to 5, and at least one compound (11) selected from the group consisting of an oxalic acid skeleton-containing lithium compound (a), a lithium phosphate compound (b), a sulfonic acid skeleton-containing compound (c), and a phosphate/phosphite compound (d). Also disclosed in an electrochemical device including the electrolyte solution, a lithium ion secondary battery containing the electrolyte solution and a module including the electrochemical device or lithium ion secondary battery.
    Type: Application
    Filed: January 31, 2019
    Publication date: November 26, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Takaya YAMADA, Shigeaki YAMAZAKI, Yuuki SUZUKI, Tomoya HIDAKA, Kenzou TAKAHASHI, Toshiharu SHIMOOKA
  • Publication number: 20200365945
    Abstract: An electrolyte solution containing at least one selected from a compound represented by the following formula (1-1) (wherein Rf111s are the same as or different from each other and are each a C2-C4 fluorinated alkenyl group), a compound represented by the following formula (1-2) (wherein R121 is a C1-C4 alkyl group; and Rf121 is a C2-C4 fluorinated alkenyl group), and a compound represented by the following formula (1-3) (wherein Rf131 is a C1-C3 fluorinated alkyl group; and R131 is a C6-C12 aryl group):
    Type: Application
    Filed: October 26, 2018
    Publication date: November 19, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiko KUWAJIMA, Kotaro HAYASHI, Hisako NAKAMURA, Takaya YAMADA, Yuuki SUZUKI, Shigeaki YAMAZAKI, Akiyoshi YAMAUCHI, Kenzou TAKAHASHI
  • Publication number: 20200280096
    Abstract: An electrolyte solution containing a compound represented by the following formula (1): wherein R101 and R102 are the same as or different from each other and are each a hydrogen atom, a fluorine atom, or an alkyl group optionally containing a fluorine atom; and R103 is an alkyl group or an organic group containing an unsaturated carbon-carbon bond. Also disclosed is an electrochemical device and lithium ion secondary battery including the electrolyte solution, and a module including the electrochemical device or lithium ion secondary battery.
    Type: Application
    Filed: October 4, 2018
    Publication date: September 3, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hisako NAKAMURA, Takaya YAMADA, Shigeaki YAMAZAKI, Yuuki SUZUKI, Kenzou TAKAHASHI, Akiyoshi YAMAUCHI, Kotaro HAYASHI
  • Patent number: 10756384
    Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device (e.g., a lithium ion secondary battery) or a module that is less likely to generate gas even in high-temperature storage and has high capacity retention even after high-temperature storage. The present invention relates to an electrolytic solution which may contain a compound represented by Y21R21C—CY22R22 wherein R21 and R22 may be the same as or different from each other, and are each H, an alkyl group, or a halogenated alkyl group; Y21 and Y22 may be the same as or different from each other, and are each —OR23 or a halogen atom; and R23 is H, an alkyl group, or a halogenated alkyl group.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: August 25, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya Hidaka, Hideo Sakata, Kenzou Takahashi, Hiroyuki Arima, Shigeaki Yamazaki, Yoshiko Kuwajima, Shinichi Kinoshita
  • Publication number: 20200243911
    Abstract: The invention provides an electrolyte solution capable of providing an electrochemical device having low resistance and excellent high-temperature storage characteristics and cycle characteristics. The electrolyte solution contains lithium fluorosulfonate and a solvent containing a compound (1) represented by the following formula (1):CF2HCOOCH3.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 30, 2020
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Yoshiko KUWAJIMA, Kenzou TAKAHASHI, Shigeaki YAMAZAKI, Hiroyuki ARIMA, Tomoya HIDAKA, Masakazu KINOSHITA, Hisako NAKAMURA, Takaya YAMADA, Toshiharu SHIMOOKA, Yuuki SUZUKI, Tatsuya OHTSUKA
  • Publication number: 20200203769
    Abstract: An electrolyte solution for a lithium ion secondary battery, containing a compound (1) represented by the following formula (1): wherein R1 and R2 are each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10?6 to 1.0×103 ppm. Also disclosed is an electrolyte solution for a lithium ion secondary battery, containing an imidazolium cation (1-1) represented by the following formula (1-1), a bis(oxalato)borate anion, and a hexafluorophosphate anion, the formula (1-1) being: wherein R1 and R2 are each independently a C1-C4 alkyl group optionally containing an ether bond, and wherein chloride ion is present at a concentration of 1.0×10?6 to 1.0×103 ppm.
    Type: Application
    Filed: July 12, 2018
    Publication date: June 25, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hisako NAKAMURA, Shigeaki YAMAZAKI, Kenzou TAKAHASHI, Yuuki SUZUKI, Akiyoshi YAMAUCHI, Kotaro HAYASHI
  • Publication number: 20200127332
    Abstract: An electrolyte solution containing at least one selected from a compound (I) represented by the following formula (I) and specific compounds (II). The formula (I) is as follows: wherein R11 is a C2-C6 alkyl group. Also disclosed are a secondary battery containing the electrolyte solution and a module including the electrochemical device or the secondary battery.
    Type: Application
    Filed: May 30, 2018
    Publication date: April 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya HIDAKA, Kenzou TAKAHASHI, Masakazu KINOSHITA, Shigeaki YAMAZAKI
  • Publication number: 20200127331
    Abstract: An electrolyte solution contains tris(trimethylsilyl) phosphite and at least one fluorinated saturated cyclic carbonate (1) selected from pentafluoropropylethylene carbonate and heptafluoroisobutylethylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution.
    Type: Application
    Filed: May 30, 2018
    Publication date: April 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoya HIDAKA, Kenzou TAKAHASHI, Masakazu KINOSHITA, Shigeaki YAMAZAki
  • Publication number: 20200066463
    Abstract: An electrolyte solution containing a solvent and a compound represented by the following formula (1), wherein R1 is a C1-C5 linear or branched non-fluorinated alkyl group optionally containing an ether bond. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the electrochemical device or lithium ion secondary battery.
    Type: Application
    Filed: March 1, 2018
    Publication date: February 27, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masakazu KINOSHITA, Kenzou TAKAHASHI, Shigeaki YAMAZAKI, Hiroyuki ARIMA
  • Publication number: 20200028214
    Abstract: An electrolyte solution containing a solvent. The solvent contains a compound (1) represented by the following formula (1), wherein Ra, Rb, Rc, and Rd are the same as or different from each other, and are each —H, —F, —CH3, or —CF3; at least one of Ra, Rb, Rc, or Rd is —F or —CF3; and at least one of Ra, Rb, Rc, or Rd is —CH3, and a compound (2) represented by the following formula (2), wherein Re is a C1-C5 linear or branched alkyl or alkoxy group optionally containing an ether bond; Rf is a C1-C5 linear or branched alkyl group optionally containing an ether bond; and at least one of Re or Rf contains a fluorine atom. Also disclosed is an electrochemical device including the electrolyte solution, a lithium-ion secondary battery including the electrolyte solution and a module including the electrochemical device.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki YAMAZAKI, Hiroyuki ARIMA, Kenzou TAKAHASHI