Patents by Inventor Hirokazu Kawaoka

Hirokazu Kawaoka 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: 20120286793
    Abstract: A sulfide-based solid electrolyte cell which can efficiently detect its deterioration, a cell pack equipped with the cell, a vehicle system equipped with the cell pack, and a method for detecting hydrogen sulfide. A sulfide-based solid electrolyte cell including at least one or more power generation units each including a positive electrode, a negative electrode and an electrolyte present between the positive and negative electrodes, and a cell case which houses the power generation units, wherein at least one of the positive electrode, negative electrode and electrolyte includes a sulfur material, and wherein at least one of a current collector which constitutes a charging and discharging path, a lead which constitutes a charging and discharging path, and a lead which is connected to a circuit that is attached to the charging and discharging path, includes a material which chemically reacts with hydrogen sulfide to change electrical resistance.
    Type: Application
    Filed: December 17, 2009
    Publication date: November 15, 2012
    Inventors: Hirokazu Kawaoka, Hiroshi Nagase
  • Publication number: 20120216394
    Abstract: A method for producing a solid electrolyte battery that makes it possible to prevent foreign substance attachment to an electrode unit and press the electrode unit uniformly. A method for producing a solid electrolyte battery in which an outer case houses at least one electrode cell that has an electrode unit comprising at least a positive electrode layer, a solid electrolyte layer and a negative electrode layer stacked in this order, the method including the steps of: inserting the electrode cell in the outer case before pressing the electrode cell in a stacking direction in the electrode unit, and pressing the electrode cell from the outside of the outer case in the stacking direction in the electrode unit.
    Type: Application
    Filed: November 2, 2009
    Publication date: August 30, 2012
    Inventors: Masayuki Kitaura, Hirokazu Kawaoka
  • Publication number: 20120115018
    Abstract: A method for producing a solid-state cell which makes it possible to produce a highly reliable solid-state cell that suppresses a decrease in the thickness of the solid electrolyte layer and a short circuit between the positive and negative electrodes, and which is highly flexible in the size and shape of the solid electrolyte layer and electrodes. The method comprising: a structure preparing step for preparing a first structure, a second structure, or a third structure, a solid electrolyte material powder layer, and a positive electrode material powder layer are stacked, in this sequence; an insulating member disposing step for disposing a heat-resistant insulating member which is in contact with an outer periphery of the structure in the stacking direction of the structure and surrounds the outer periphery; and a heat-compressing step for heat-compressing the structure and heat-resistant insulating member, in the stacking direction of the structure.
    Type: Application
    Filed: May 11, 2009
    Publication date: May 10, 2012
    Inventors: Hirokazu Kawaoka, Hiroyasu Kado
  • Publication number: 20120015220
    Abstract: The present invention is a battery comprising: a power section containing a sulfur-based material; a distinguishing section which discolors by chemical reaction with hydrogen sulfide; and an exterior body incorporating the power section and the distinguishing section, the distinguishing section being observable from outside the exterior body. By checking discoloration of the distinguishing section or the distinguishing means, it is possible to easily detect the presence or absence of hydrogen sulfide in the battery and then judge deterioration of the battery with non-destructive inspection.
    Type: Application
    Filed: November 4, 2009
    Publication date: January 19, 2012
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirokazu Kawaoka, Hiroshi Nagase, Yasuyuki Tamane
  • Publication number: 20110318500
    Abstract: Powder coating apparatus is equipped with a shutter for opening and closing the space between an object to be coated and a screen electrode. First, a powder is supplied onto the screen electrode from a hopper while the shutter is closed. Next, a brush is slidingly rubbed against the surface of a powder layer while the shutter is closed. The powder is thereby uniformed on the screen electrode without being transferred to the object. Subsequently, a high voltage is applied between the screen electrode and a transfer electrode to form a static electric field, and the shutter is opened. Then, the brush is slidingly rubbed against the powder layer again, and the powder on the screen electrode is coated on the object.
    Type: Application
    Filed: February 26, 2010
    Publication date: December 29, 2011
    Inventor: Hirokazu Kawaoka
  • Publication number: 20110123868
    Abstract: A purpose is to provide a solid electrolyte battery including a low-resistance solid electrolyte layer, a vehicle mounting this solid electrolyte battery, a battery-mounting device, and a manufacturing method of the solid electrolyte battery. A solid electrolyte battery 1 includes a positive active material layer 21 containing positive active material particles 22, a negative active material layer 31 containing negative active material particles 32, and a solid electrolyte layer 40 interposed therebetween. The solid electrolyte layer contains a sulfide solid electrolyte SE but no resin binder and self-maintains its shape by a bonding force of the sulfide solid electrolyte. The solid electrolyte layer has a layer thickness 40T of 50 ?m or less and an area 40S of 100 cm2 or more.
    Type: Application
    Filed: December 1, 2008
    Publication date: May 26, 2011
    Inventors: Hirokazu Kawaoka, Hideyuki Nagai, Shinji Kojima
  • Publication number: 20110070365
    Abstract: Provided is a method for manufacturing a film-formed body wherein a second film is formed by suppressing influence of existence/absence of a first film, at the time of forming the second film by making fine particles collide and deposited on a second film forming surface on a substrate whereupon the first film has been already formed. A film-formed body is provided with a foil-like substrate having a first film-forming surface and a second film-forming surface; a first film formed on a part of the first film-forming surface; and a second film formed at least on a part of the second film-forming surface. The first film includes an overlapping section which overlaps with the second film when viewed in the thickness direction of the substrate.
    Type: Application
    Filed: November 30, 2010
    Publication date: March 24, 2011
    Inventor: Hirokazu KAWAOKA