Patents by Inventor Nobuyuki Fujihara

Nobuyuki Fujihara 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).

  • Binder composition for power storage devices
    Patent number: 9966606
    Abstract: A binder composition for power storage devices comprising a polymer which contains at least 3 to 40 mass % of a first recurring unit derived from an unsaturated carboxylic acid ester having an alicyclic hydrocarbon group and 1 to 40 mass % of a second recurring unit derived from an ?, ?-unsaturated nitrile compound based on 100 mass % of the total of all recurring units.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 8, 2018
    Assignee: JSR CORPORATION
    Inventors: Yoshiharu Otsuka, Nobuyuki Fujihara, Hiroyuki Miyauchi
  • Protective film and composition for preparing the same, slurry, and electrical storage device
    Patent number: 9522995
    Abstract: An electrical storage device includes a cathode, an anode, a protective film that is provided between the cathode and the anode, and an electrolyte solution, the protective film including a polymer that includes a repeating unit derived from a fluorine-containing monomer, and a repeating unit derived from an unsaturated carboxylic acid.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 20, 2016
    Assignee: JSR Corporation
    Inventors: Yoshiharu Otsuka, Hironori Kitaguchi, Nobuyuki Fujihara
  • Electrical storage device electrode binder composition, electrical storage device electrode slurry, electrical storage device electrode, and electrical storage device
    Patent number: 9520242
    Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: December 13, 2016
    Assignee: JSR CORPORATION
    Inventors: Hironori Kitaguchi, Yoshiharu Otsuka, Nobuyuki Fujihara, Tatsuaki Honda
  • BINDER COMPOSITION FOR POWER STORAGE DEVICES
    Publication number: 20160079007
    Abstract: A binder composition for power storage devices comprising a polymer which contains at least 3 to 40 mass % of a first recurring unit derived from an unsaturated carboxylic acid ester having an alicyclic hydrocarbon group and 1 to 40 mass % of a second recurring unit derived from an ?,?-unsaturated nitrile compound based on 100 mass % of the total of all recurring units.
    Type: Application
    Filed: March 25, 2014
    Publication date: March 17, 2016
    Applicant: JSR CORPORATION
    Inventors: Yoshiharu OTSUKA, Nobuyuki FUJIHARA, HIroyuki MIYAUCHI
  • ELECTRICAL STORAGE DEVICE ELECTRODE BINDER COMPOSITION, ELECTRICAL STORAGE DEVICE ELECTRODE SLURRY, ELECTRICAL STORAGE DEVICE ELECTRODE, AND ELECTRICAL STORAGE DEVICE
    Publication number: 20150213968
    Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.
    Type: Application
    Filed: April 6, 2015
    Publication date: July 30, 2015
    Applicant: JSR CORPORATION
    Inventors: Hironori KITAGUCHI, Yoshiharu OTSUKA, Nobuyuki FUJIHARA, Tatsuaki HONDA
  • PROTECTIVE FILM AND COMPOSITION FOR PREPARING THE SAME, SLURRY, AND ELECTRICAL STORAGE DEVICE
    Publication number: 20140272523
    Abstract: An electrical storage device includes a cathode, an anode, a protective film that is provided between the cathode and the anode, and an electrolyte solution, the protective film including a polymer that includes a repeating unit derived from a fluorine-containing monomer, and a repeating unit derived from an unsaturated carboxylic acid.
    Type: Application
    Filed: October 4, 2012
    Publication date: September 18, 2014
    Applicant: JSR CORPORATION
    Inventors: Yoshiharu Otsuka, Hironori Kitaguchi, Nobuyuki Fujihara
  • Binder composition for positive electrodes
    Patent number: 8513349
    Abstract: A binder composition for the positive electrode of an electric storage device. The composition contains polymer alloy particles composed of: a polymer (A) having a recurring unit derived from vinylidene fluoride, ethylene tetrafluoride, propylene hexafluoride, or mixtures thereof; a polymer (B) having a recurring unit derived from an unsaturated carboxylic acid ester; and water. The average diameter of the polymer alloy particles is 50 to 400 nm. The polymer alloy particles are synthesized by absorbing a monomer (b) to the polymer (A) and polymerizing the monomer (b) to synthesize the polymer (B).
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 20, 2013
    Assignee: JSR Corporation
    Inventors: Yoshiharu Ootsuka, Hironori Kitaguchi, Nobuyuki Fujihara
  • ELECTRICAL STORAGE DEVICE ELECTRODE BINDER COMPOSITION, ELECTRICAL STORAGE DEVICE ELECTRODE SLURRY, ELECTRICAL STORAGE DEVICE ELECTRODE, AND ELECTRICAL STORAGE DEVICE
    Publication number: 20130052530
    Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.
    Type: Application
    Filed: August 30, 2012
    Publication date: February 28, 2013
    Applicant: JSR Corporation
    Inventors: Hironori KITAGUCHI, Yoshiharu Otsuka, Nobuyuki Fujihara, Tatsuaki Honda
  • BINDER COMPOSITION FOR POSITIVE ELECTRODES
    Publication number: 20120309892
    Abstract: A binder composition for the positive electrode of an electric storage device. The composition contains polymer alloy particles composed of: a polymer (A) having a recurring unit derived from vinylidene fluoride, ethylene tetrafluoride, propylene hexafluoride, or mixtures thereof; a polymer (B) having a recurring unit derived from an unsaturated carboxylic acid ester; and water. The average diameter of the polymer alloy particles is 50 to 400 nm. The polymer alloy particles are synthesized by absorbing a monomer (b) to the polymer (A) and polymerizing the monomer (b) to synthesize the polymer (B).
    Type: Application
    Filed: December 28, 2011
    Publication date: December 6, 2012
    Applicant: JSR CORPORATION
    Inventors: Yoshiharu Ootsuka, Hironori Kitaguchi, Nobuyuki Fujihara