Patents by Inventor HIROTETSU SUZUKI

HIROTETSU SUZUKI 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: 9640840
    Abstract: A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: May 2, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Nakatsutsumi, Nobuhiko Hojo, Hirotetsu Suzuki, Yu Otsuka
  • Publication number: 20160351945
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a fluorinated phosphate. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Application
    Filed: May 18, 2016
    Publication date: December 1, 2016
    Inventors: HIROTETSU SUZUKI, NOBUHIKO HOJO
  • Publication number: 20160351958
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether. The molecular ends of the perfluoropolyether are each an unsubstituted alkyl ether or an unsubstituted carboxylate. The perfluoropolyether has a repeating unit composed of a perfluoroalkyl chain and an oxygen atom. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 1, 2016
    Inventors: HIROTETSU SUZUKI, NOBUHIKO HOJO
  • Publication number: 20160351959
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether having a weight-average molecular weight of 350 or more and less than 760. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 1, 2016
    Inventors: HIROTETSU SUZUKI, NOBUHIKO HOJO
  • Publication number: 20160156067
    Abstract: A non-aqueous electrolytic solution of the present invention includes: a solvent component including a glyme solvent and a phosphazene solvent; and an alkali metal salt composed of an alkali metal cation and an anion, the alkali metal salt being dissolved in the solvent component. The phosphazene solvent is a cyclic phosphazene compound represented by the formula (1). where X1 to X6 each independently represent a halogen atom or OR1, R1 is a substituted or unsubstituted aromatic group or a substituted or unsubstituted saturated aliphatic group, the aromatic group and the saturated aliphatic group each optionally contain a halogen atom, a nitrogen atom, an oxygen atom, a sulfur atom, or a silicon atom, and the saturated aliphatic group is linear or cyclic.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 2, 2016
    Applicant: Panasonic Corporation
    Inventors: Hirotetsu SUZUKI, Nobuhiko HOJO, Takayuki NAKATSUTSUMI
  • Publication number: 20150155601
    Abstract: A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.
    Type: Application
    Filed: November 25, 2014
    Publication date: June 4, 2015
    Inventors: TAKAYUKI NAKATSUTSUMI, NOBUHIKO HOJO, HIROTETSU SUZUKI, YU OTSUKA