Patents by Inventor Tsunehisa Hirashita

Tsunehisa Hirashita 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).

  • Liquid electrolyte for batteries, method for producing the same, and battery comprising the same
    Patent number: 9722288
    Abstract: An object of the present invention is to provide a liquid electrolyte for batteries, which has excellent ion conductivity, a method for producing the liquid electrolyte and a battery including the liquid electrolyte. Disclosed is a liquid electrolyte for batteries, comprising a mesoionic compound represented by the following general formula (1): wherein R1 and R2 are each independently an alkyl group having 1 to 3 carbon atoms.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: August 1, 2017
    Assignees: NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Shuki Araki, Katsuyuki Kagami, Hirofumi Nakamoto, Taishi Shiotsuki
  • Liquid electrolyte for lithium batteries, method for producing the same, and lithium battery comprising the liquid electrolyte for lithium batteries
    Patent number: 9620817
    Abstract: The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1): wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —ClH2l—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 11, 2017
    Assignees: NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Shuki Araki, Hirofumi Nakamoto, Atsushi Shirasawa
  • Electrolyte solution for magnesium battery and magnesium battery containing this electrolyte solution
    Patent number: 9231278
    Abstract: Provided is an electrolyte solution for a magnesium battery, containing a mesoionic compound represented by the following general formula (1): (in general formula (1), R1 and R2 are each independently a C1-7 hydrocarbyl group or oxygen-containing hydrocarbyl group and X is O or S).
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: January 5, 2016
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Hirofumi Nakamoto
  • LIQUID ELECTROLYTE FOR LITHIUM BATTERIES, METHOD FOR PRODUCING THE SAME, AND LITHIUM BATTERY COMPRISING THE LIQUID ELECTROLYTE FOR LITHIUM BATTERIES
    Publication number: 20150236377
    Abstract: The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1): wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —C1H21—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.
    Type: Application
    Filed: September 9, 2013
    Publication date: August 20, 2015
    Inventors: Tsunehisa Hirashita, Shuki Araki, Hirofumi Nakamoto, Atsushi Shirasawa
  • ELECTROLYTE SOLUTION FOR MAGNESIUM BATTERY AND MAGNESIUM BATTERY CONTAINING THIS ELECTROLYTE SOLUTION
    Publication number: 20140242473
    Abstract: Provided is an electrolyte solution for a magnesium battery, containing a mesoionic compound represented by the following general formula (1): (in general formula (1), R1 and R2 are each independently a C1-7 hydrocarbyl group or oxygen-containing hydrocarbyl group and X is O or S).
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, National University Corporation Nagoya Institute Of Technology
    Inventors: Tsunehisa HIRASHITA, Hirofumi NAKAMOTO
  • LIQUID ELECTROLYTE FOR BATTERIES, METHOD FOR PRODUCING THE SAME, AND BATTERY COMPRISING THE SAME
    Publication number: 20140220476
    Abstract: An object of the present invention is to provide a liquid electrolyte for batteries, which has excellent ion conductivity, a method for producing the liquid electrolyte and a battery including the liquid electrolyte. Disclosed is a liquid electrolyte for batteries, comprising a mesoionic compound represented by the following general formula (1): wherein R1 and R2 are each independently an alkyl group having 1 to 3 carbon atoms.
    Type: Application
    Filed: August 28, 2012
    Publication date: August 7, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NAGOYA INSTITUTE OF TECHNOLOGY
    Inventors: Tsunehisa Hirashita, Shuki Araki, Katsuyuki Kagami, Hirofumi Nakamoto, Taishi Shiotsuki
  • ELECTROLYTE SOLUTION FOR LITHIUM BATTERY, LITHIUM BATTERY INCLUDING ELECTROLYTE SOLUTION, ELECTROLYTE SOLUTION FOR LITHIUM AIR BATTERY, AND LITHIUM AIR BATTERY INCLUDING ELECTROLYTE SOLUTION
    Publication number: 20130209915
    Abstract: An electrolyte solution for a lithium battery contains 1-butyl-3-methyltetrazolium-5-olate represented by formula (1).
    Type: Application
    Filed: October 24, 2011
    Publication date: August 15, 2013
    Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Hirofumi Nakamoto, Taishi Shiotsuki