Patents by Inventor Hideaki Katayama

Hideaki Katayama 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: 20110039145
    Abstract: The present invention provides a lithium secondary battery using a separator including a porous film formed by binding inorganic oxide particles together with a binder. The inorganic oxide particles are treated so that an amount of alkali metal elements eluted therefrom when they are immersed in ion exchange water is reduced to 1000 ppm or less. As a result, it is possible to provide a lithium secondary battery with a high degree of reliability, whose characteristics deteriorate less when it is used or stored for an extended period.
    Type: Application
    Filed: June 9, 2009
    Publication date: February 17, 2011
    Inventors: Hiroshi Abe, Toshihiro Abe, Nobuaki Matsumoto, Hideaki Katayama
  • Publication number: 20110003209
    Abstract: The separator for a battery according to the present invention is a separator for a battery including an insulator layer containing a fibrous material having a heat resistant temperature of equal to or higher than 150° C., insulating inorganic fine particles and a binder, or a separator for a battery including a porous layer formed of a thermal melting resin and an insulator layer containing insulating inorganic fine particles and a binder, wherein water content per unit volume is equal to or smaller than 1 mg/cm3 when the separator is held for 24 hours in an atmosphere with a relative humidity of 60% at 20° C. The use of the separator for a battery according to the present invention makes it possible to provide a lithium secondary battery that has favorable reliability and safety and is excellent in storage characteristics and charge-discharge cycle characteristics.
    Type: Application
    Filed: September 7, 2007
    Publication date: January 6, 2011
    Inventors: Hideaki Katayama, Eri Kojima, Shigeo Aoyama, Yoshinori Sato
  • Patent number: 7848069
    Abstract: A protective circuit connected between a terminal of a semiconductor integrated circuit and ground (GND), comprises: a first diode having an anode connected to the terminal of the semiconductor integrated circuit; a second diode having an anode connected to GND and a cathode connected to the cathode of the first diode; a transistor having a collector or drain connected to the terminal of the semiconductor integrated circuit, and an emitter or source connected to GND; and at least one third diode connected in series in a forward direction from the cathode of the first diode toward the base or gate of the transistor.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: December 7, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Ootsuka, Hideaki Katayama
  • Publication number: 20100247695
    Abstract: A laterally independently operated column-equipped vulcanizer comprises two (right and left) die opening and closing devices (12A, 12B) disposed to be operable independently of each other, the die opening and closing devices having upper die mounting members (17a, 17b) corresponding to lower die mounting members (13a, 13b) installed on a base plate (11), the upper die mounting members being supported in an ascendable and descendable manner on right and left paired columns (18a, 18b) erected on the base plate. The right and left paired columns throughout the two die opening and closing devices are arranged in V-configuration as viewed in plan. Loaders (22a, 22b) capable of carrying green tires GT into the die opening and closing devices are disposed on the side of the columns narrowly spaced from each other in the lateral direction among the columns arranged in V-configuration.
    Type: Application
    Filed: September 16, 2008
    Publication date: September 30, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Katsuhide Aikawa, Hideki Fukuda, Hideaki Katayama
  • Publication number: 20100221965
    Abstract: A slurry for forming an insulating layer of the present invention includes heat-resistant insulating fine particles, a thickening agent, and a dispersion medium. The insulating fine particles are dispersed in the dispersion medium. The slurry for forming an insulating layer has a viscosity of 5 to 500 mPa·s. The proportion of particles with a particle size of 1 ?m or less in the insulating fine particles is 30 vol % or more and the proportion of particles with a particles size of 3 ?m or more in the insulating fine particles is 10 vol % or less. An electrochemical device of the present invention includes a separator for an electrochemical device of the present invention that is produced using the slurry for forming an electrochemical device of the present invention.
    Type: Application
    Filed: January 29, 2009
    Publication date: September 2, 2010
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Hideaki Katayama, Hiroshi Abe, Nobuaki Matsumoto, Toshihiro Abe, Yasutaka Kuroki
  • Publication number: 20100015530
    Abstract: A separator for an electrochemical device of the present invention includes a porous film including: a filler; an organic binder; and at least one resin selected from resin A that has a melting point of 80 to 140° C. and resin B that absorbs a non-aqueous electrolyte and swells upon heating and whose swelling degree increases with increasing temperature, and the filler contains boehmite having a secondary particle structure in which primary particles are connected.
    Type: Application
    Filed: March 14, 2008
    Publication date: January 21, 2010
    Inventors: Hideaki Katayama, Yoshinori Sato, Toshihiro Abe, Nobuaki Matsumoto
  • Publication number: 20090325058
    Abstract: An electrochemical device of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator. The separator includes a first porous layer composed mainly of a thermoplastic resin and a second porous layer composed mainly of insulating particles with a heat-resistant temperature of 150° C. or higher. The first porous layer is disposed to face the negative electrode.
    Type: Application
    Filed: May 8, 2008
    Publication date: December 31, 2009
    Inventors: Hideaki Katayama, Toshihiro Abe, Nobuaki Matsumoto
  • Publication number: 20090195947
    Abstract: A protective circuit connected between a terminal of a semiconductor integrated circuit and ground (GND), comprises: a first diode having an anode connected to the terminal of the semiconductor integrated circuit; a second diode having an anode connected to GND and a cathode connected to the cathode of the first diode; a transistor having a collector or drain connected to the terminal of the semiconductor integrated circuit, and an emitter or source connected to GND; and at least one third diode connected in series in a forward direction from the cathode of the first diode toward the base or gate of the transistor.
    Type: Application
    Filed: May 22, 2008
    Publication date: August 6, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroyuki Ootsuka, Hideaki Katayama
  • Publication number: 20090067119
    Abstract: An electrochemical device having excellent safety at a high temperature is provided by using a separator for an electrochemical device, which is made of a porous film including a first separator layer and a second separator layer. The first separator layer includes, as a main ingredient, at least one kind of resin selected from the group consisting of resin A that has a melting point in a range of 80° C. to 130° C., and resin B that absorbs a nonaqueous electrolyte and swells due to heating and whose swelling degree is increased as the temperature rises, the second separator layer includes, as a main ingredient, a filler that has a heat-resistant temperature of not lower than 150° C., and at least one of the first separator layer and the second separator layer includes flakes.
    Type: Application
    Filed: December 8, 2006
    Publication date: March 12, 2009
    Inventors: Hideaki Katayama, Toshihiro Abe, Nobuaki Matsumoto, Yoshinori Sato
  • Patent number: 7455935
    Abstract: An ion-conductive electrolyte which comprises a compound having in the molecule a structure represented by the following chemical formula and an electrolyte salt; and a cell employing the ion-conductive electrolyte. The ion-conductive electrolyte has a low vapor pressure, has a high ion conductivity even at room temperature, and has a high lithium ion transport number. With this ion-conductive electrolyte, a highly safe cell having excellent discharge characteristics can be provided.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: November 25, 2008
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Toshihiro Abe, Shoji Saibara, Hideaki Katayama, Shigeo Aoyama, Keigo Aoi, Makito Yokoe, Masahiko Okada
  • Publication number: 20070264577
    Abstract: An electrochemical device having excellent safety at high temperature is provided by using a separator for an electrochemical device, which is made of a porous film comprising: a porous base (5) having a heat-resistant temperature of 150° C. or higher and including filler particles (3); at least one kind of shutdown resin (6) selected from the group consisting of resin A that has a melting point in a range of 80° C. to 130° C. and resin B that absorbs an electrolyte and swells due to heating, and the swelling degree is increased as the temperature rises; and a binder (4).
    Type: Application
    Filed: December 8, 2005
    Publication date: November 15, 2007
    Inventors: Hideaki Katayama, Toshihiro Abe, Nobuaki Matsumoto, Fusaji Kita, Shigeo Aoyama
  • Publication number: 20060216609
    Abstract: A non-aqueous electrolyte battery according to the present invention is a non-aqueous electrolyte battery including: a positive electrode including a positive collector and a positive active material containing layer formed on the positive collector; a negative electrode including a negative collector and a negative active material containing layer formed on the negative collector; and a separator provided between the positive electrode and the negative electrode. The positive electrode has a positive collector exposed portion at a part of the positive collector, on which the positive active material containing layer is not formed. An insulating resin film formed of a base substance of a heat resistant resin having a heat resistant temperature of 150° C. or more, the resin film containing a thermoplastic resin therein, is provided at a portion where the positive collector exposed portion and the negative active material containing layer are opposed to each other with the separator positioned therebetween.
    Type: Application
    Filed: March 22, 2006
    Publication date: September 28, 2006
    Inventors: Toshihiro Abe, Hayato Hicuchi, Hideaki Katayama
  • Patent number: 7022878
    Abstract: Organic borates having the formula: The borates are highly soluble in solvent of low dielectric constant. Also disclosed are nonaqueous electrolytes made from these organic borates; lithium secondary batteries with improved high-temperature storage characteristics; and electric appliances that comprises the battery and are free of protection circuits.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: April 4, 2006
    Assignees: Hitachi, Ltd., Kanto Kagaku Kabushiki Kaisha
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi, Hiroyuki Yamaguchi, Hideki Takahashi, Masaru Kato
  • Publication number: 20050171383
    Abstract: Organic borates having the formula: The borates are highly soluble in solvent of low dielectric constant. Also disclosed are nonaqueous electrolytes made from these organic borates; lithium secondary batteries with improved high-temperature storage characteristics; and electric appliances that comprises the battery and are free of protection circuits.
    Type: Application
    Filed: October 26, 2004
    Publication date: August 4, 2005
    Applicants: Hitachi, Ltd., Kanto Kagaku Kabushiki Kaisha
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi, Hiroyuki Yamaguchi, Hideki Takahashi, Masaru Kato
  • Publication number: 20040241553
    Abstract: An ion-conductive electrolyte which comprises a compound having in the molecule a structure represented by the following chemical formula and an electrolyte salt; and a cell employing the ion-conductive electrolyte. The ion-conductive electrolyte has a low vapor pressure, has a high ion conductivity even at room temperature, and has a high lithium ion transport number. With this ion-conductive electrolyte, a highly safe cell having excellent discharge characteristics can be provided.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 2, 2004
    Inventors: Toshihiro Abe, Shoji Saibara, Hideaki Katayama, Shigeo Aoyama, Keigo Aoi, Makito Yokoe, Masahiko Okada
  • Patent number: 6824928
    Abstract: The object of the present invention is to supply organic borates highly soluble even in a solvent of a low dielectric constant; nonaqueous electrolytes made from these organic borates and excellent in characteristics; lithium secondary batteries with improved high-temperature storage characteristics; electric appliances that can be free of protection circuits, and; various applications of the electric appliances. The present invention relates to: organic borate compounds represented by structural formula (1) where X denotes lithium or quaternary ammonium or quaternary phosphonium and R1, R2, R3, and R4 each denote an independent halogen-atom displacement alkyl group whose carbon number ranges from 1 to 4, and organic borate compounds whose R1, R2, R3, and R4 are represented by trifluoromethyl groups or pentafluoroethyl groups, in particular, can be easily dissolved to concentrations of at least 0.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: November 30, 2004
    Assignees: Hitachi, Ltd., Kanto Kagaku Kabushiki Kaisha
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi, Hiroyuki Yamaguchi, Hideki Takahashi, Masaru Kato
  • Publication number: 20040053139
    Abstract: The object of the present invention is to supply organic borates highly soluble even in a solvent of a low dielectric constant; nonaqueous electrolytes made from these organic borates and excellent in characteristics; lithium secondary batteries with improved high-temperature storage characteristics; electric appliances that can be free of protection circuits, and; various applications of the electric appliances.
    Type: Application
    Filed: August 15, 2003
    Publication date: March 18, 2004
    Applicants: Hitachi, Ltd., Kanto Kagaku Kabushiki Kaisha
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi, Hiroyuki Yamaguchi, Hideki Takahashi, Masaru Kato
  • Patent number: 6495293
    Abstract: An organic electrolyte and polymer is provided wherein diffusivity of mobile ions is enhanced; and a lithium primary battery, lithium secondary battery, polymer secondary battery, and electrochemical capacitor, is provided which have increased capacities at a low temperature. A non-aqueous electrolyte and polymer electrolyte, wherein a fluorinated solvent having a fluorinated alkyl group, of which the terminal end structure is an unsymmetrical structure, is mixed with the electrolyte, is provided for use in various applications.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: December 17, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi
  • Patent number: 6475680
    Abstract: A lithium secondary battery which is capable of terminating its operation safely with no accompanying rapid change in appearance, no gas generation, nor pressure change when any of an overcharge, overdischarge, and abnormal temperature rise occurs in the secondary battery itself. The lithium secondary battery includes a negative electrode, which is capable of absorbing and desorbing lithium, a positive electrode, which is capable of absorbing and desorbing lithium, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte is solidified by a thermal reaction at a designated temperature.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: November 5, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Juichi Arai, Hideaki Katayama, Haruo Akahoshi, Tomoe Takamura, Takao Iwayanagi
  • Publication number: 20020160273
    Abstract: The object of the present invention is to supply organic borates highly soluble even in a solvent of a low dielectric constant; nonaqueous electrolytes made from these organic borates and excellent in characteristics; lithium secondary batteries with improved high-temperature storage characteristics; electric appliances that can be free of protection circuits, and; various applications of the electric appliances.
    Type: Application
    Filed: September 21, 2001
    Publication date: October 31, 2002
    Inventors: Juichi Arai, Hideaki Katayama, Mitsuru Kobayashi, Hiroyuki Yamaguchi, Hideki Takahashi, Masaru Kato