Patents by Inventor Kazuki Hirata

Kazuki Hirata 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: 20200323040
    Abstract: An electrical resistor includes borosilicate particles, Si-containing particles, and pore parts. The pore parts are constituted by gaps between the borosilicate particles and the Si-containing particles and surround the borosilicate particles and the Si-containing particles. A honeycomb structure includes the electrical resistor. An electric heating catalytic device has the honeycomb structure.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
  • Publication number: 20200222891
    Abstract: An electrically heated catalyst includes a honeycomb substrate, an electrode, and a joining section. The honeycomb substrate and the joining section include matrices and conductive fillers. The matrices contain borosilicate including at least one of an alkali metal and an alkaline earth metal. The joining section preferably has a softening point lower than that of the honeycomb substrate.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Junichi NARUSE, Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
  • Publication number: 20200154524
    Abstract: An electrical resistor comprises a matrix composed of borosilicate containing at least one kind of alkali group atoms selected from the group consisting of Na, Mg, K, Ca, Li, Be, Rb, Sr, Cs, Ba, Fr, and Ra. The electrical resistor preferably has an electroconductive filler. A honeycomb structure comprises the electrical resistor. An electrically heated catalyst device comprises the honeycomb structure. The electrical resistor preferably has an electrical resistivity in a range from 0.0001 to 1 ?·m and an electrical resistance increase rate in a range from 0.01×10?6 to 5.0×10?4/K in a temperature range from 25° C. to 500° C.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 14, 2020
    Inventors: Takehiro TOKUNO, Junichi NARUSE, Kazuki HIRATA, Mika KAWAKITA, Yasushi TAKAYAMA
  • Patent number: 10510347
    Abstract: A language storage method according to one aspect of the present invention includes vectorization steps for vectorizing language accumulated in a dialog log database using a word vector created in advance for each word; determination step for determining whether to employ the language that has been vectorized as response data; and a storage step for accumulating the language that has been determined to be employed as the response data in a response database, in which a dimension reduction step for reducing the number of dimensions of the vector of the language vectorized in the vectorization step is included between the vectorization step and the determination step, and in the determination step, it is determined which one of an employed group and an unemployed group the vector of the language whose number of dimensions has been reduced in the dimension reduction step belongs to.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 17, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
  • Publication number: 20180258273
    Abstract: A cyclic olefin resin composition film having high toughness with less difference in toughness between length and width directions. The cyclic olefin resin composition film contains a cyclic olefin resin, a styrene elastomer and inorganic oxide fine particles having an average particle diameter of 40 nm or smaller, and has a linear expansion coefficient of 40 ppm/° C. to 60 ppm/° C. This film attains high toughness with less difference in toughness between length and width directions.
    Type: Application
    Filed: November 18, 2015
    Publication date: September 13, 2018
    Applicant: Dexerials Corporation
    Inventors: Ken HOSOYA, Akihiro HORII, Kei OBATA, Taku ISHIMORI, Kazuki HIRATA, Hiroshi SUGATA
  • Publication number: 20180166077
    Abstract: A language storage method according to one aspect of the present invention includes vectorization steps for vectorizing language accumulated in a dialog log database using a word vector created in advance for each word; determination step for determining whether to employ the language that has been vectorized as response data; and a storage step for accumulating the language that has been determined to be employed as the response data in a response database, in which a dimension reduction step for reducing the number of dimensions of the vector of the language vectorized in the vectorization step is included between the vectorization step and the determination step, and in the determination step, it is determined which one of an employed group and an unemployed group the vector of the language whose number of dimensions has been reduced in the dimension reduction step belongs to.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 14, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
  • Publication number: 20170222287
    Abstract: A lithium-air battery includes: an anode that includes an anode material for absorbing and desorbing a lithium ion; a cathode that includes a cathode material with a catalyst for reducing the oxygen using oxygen as a cathode active material; and a solid electrolyte layer that includes a solid electrolyte interposed between the anode and the cathode. At least one of charge and discharge is performed in a presence of vapor-phase water. That is, the reduction of oxygen or an oxide is performed in the presence of the vapor-phase water. With this arrangement, the air battery can exhibit the effect of reducing the overvoltage.
    Type: Application
    Filed: October 27, 2015
    Publication date: August 3, 2017
    Inventors: Yosuke SUZUKI, Kenichirou KAMI, Kazuki HIRATA
  • Patent number: 9670329
    Abstract: Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0° C. to 100° C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: June 6, 2017
    Assignee: DEXERIALS CORPORATION
    Inventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
  • Publication number: 20170152360
    Abstract: A cyclic olefin resin composition film having excellent anti-blocking properties and toughness. The cyclic olefin resin composition film containing a cyclic olefin resin and a styrene-based elastomer; the cyclic olefin resin composition film having a first surface layer part having a thickness of from 25 to 45% of total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part; an average value of minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part or the second surface layer part being from 75 to 125% of an average value of minor-axis dispersion diameter of the styrene-based elastomer of the internal part. As result, it is possible to achieve excellent anti-blocking properties and toughness.
    Type: Application
    Filed: July 10, 2015
    Publication date: June 1, 2017
    Applicant: DEXERIALS CORPORATION
    Inventors: Kanako HASHIMOTO, Akihiro HORII, Kei OBATA, Ken HOSOYA, Taku ISHIMORI, Kazuki HIRATA
  • Publication number: 20160311987
    Abstract: Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0° C. to 100° C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.
    Type: Application
    Filed: December 4, 2014
    Publication date: October 27, 2016
    Applicant: DEXERIALS CORPORATION
    Inventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
  • Patent number: 7786036
    Abstract: A dielectric ceramic composition containing at least 0.15 to 2.5 mol of a Mg compound in terms of MgO, 0 to 1.6 mol of a Ba compound in terms of BaCO3, 0.1 to 3.0 mol of a Ln (Ln includes two or three kinds of elements selected from Er, Dy, and Ho with Er being essential) compound in terms of Ln2O3, 0.01 to 0.4 mol of a Mn compound in terms of MnO4/3, 0.01 to 0.26 mol of a V compound in terms of V2O5, 0.3 to 3.5 mol of a Si compound in terms of SiO2, and 0.01 to 2.5 mol of an Al compound in terms of Al2O3 to 100 mol of barium titanate adjusted for a Ba/Ti molar ratio of 0.997 to 1.007.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: August 31, 2010
    Assignee: Panasonic Corporation
    Inventors: Kazuhiro Komatsu, Kazuki Hirata, Atsuo Nagai, Tadashi Onomi, Kenji Oka
  • Publication number: 20080316676
    Abstract: Material powder having a tetragonal perovskite crystal structure essentially containing BaTiO3 is provided. The material powder has a c-axis/a-axis ratio ranging from 1.009 to 1.011 and an average particle diameter not larger than 0.5 ?m. A dielectric layer is provided by mixing the material powder with additive. The dielectric layer has a tetragonal perovskite crystal structure essentially containing BaTiO3. The dielectric layer has a c-axis/a-axis ratio ranging from 1.005 to 1.009 and an average particle diameter not larger than 0.5 ?m. An electrode is formed on the dielectric layer, thus, providing a ceramic capacitor. This ceramic capacitor has a large capacitance and a small capacitance-decreasing rate.
    Type: Application
    Filed: September 7, 2005
    Publication date: December 25, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hiroki Moriwake, Kazuki Hirata, Atsuo Nagai, Kazuhiro Komatsu
  • Publication number: 20080199778
    Abstract: An electrode for secondary batteries comprising a positive electrode, a negative electrode and a support electrolyte is used as at least one of the electrodes. The electrode comprises a radical compound and a single ion-conducting material. The single ion-conducting material has a functional group of —COOX or -S03X wherein X represents a Li or Na. A method for making such an electrode and a secondary battery comprising the electrode as at least one of a positive electrode and a negative electrode are provided.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 21, 2008
    Applicant: DENSO Corporation
    Inventors: Kazuki Hirata, Kyohei Usami, Manabu Yamada
  • Publication number: 20080115876
    Abstract: A dielectric ceramic composition containing at least 0.15 to 2.5 mol of a Mg compound in terms of MgO, 0 to 1.6 mol of a Ba compound in terms of BaCO3, 0.1 to 3.0 mol of a Ln (Ln includes two or three kinds of elements selected from Er, Dy, and Ho with Er being essential) compound in terms of Ln2O3, 0.01 to 0.4 mol of a Mn compound in terms of MnO4/3, 0.01 to 0.26 mol of a V compound in terms of V2O5, 0.3 to 3.5 mol of a Si compound in terms of SiO2, and 0.01 to 2.5 mol of an Al compound in terms of Al2O3 to 100 mol of barium titanate adjusted for a Ba/Ti molar ratio of 0.997 to 1.007.
    Type: Application
    Filed: March 24, 2006
    Publication date: May 22, 2008
    Inventors: Kazuhiro Komatsu, Kazuki Hirata, Atsuo Nagai, Tadashi Onomi, Kenji Oka
  • Patent number: 7335328
    Abstract: A method of manufacturing a multilayer ceramic capacitor includes the steps of: preparing a mixture of a raw material powder mainly composed of barium titanate particles; forming the mixture and a binder into a green sheet; alternately layering the green sheet and an internal electrode to obtain a laminated body; and sintering the laminated body. The step of preparing the mixture includes the steps of: introducing the raw material powder and the dispersion medium into a mixing container, and stirring them with balls serving as a mixing medium, to obtain a slurry containing a raw material powder mixture; and drying the slurry. The mixing medium has a diameter that is equal to or less than 400 times the mean particle size of the barium titanate particles of the raw material. The present invention provides a multilayer ceramic capacitor having good DC bias characteristics by suppressing the variation in crystal particles.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: February 26, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
  • Patent number: 6947276
    Abstract: The present invention relates to a method of manufacturing a multilayer ceramic capacitor, having the steps of: (a) alternately layering internal electrodes and ceramic green sheets containing a ceramic material having barium titanate to form a laminated body; (b) sintering the laminated body to obtain a sintered body; and (c) forming an external electrode on end faces of the sintered body to obtain a multilayer ceramic capacitor. The barium titanate has a diffraction line derived from (002) plane and a diffraction line derived from (200) plane in an X-ray diffraction chart. The ratio I(200)/Ib of peak intensity I(200) at 2?(200) to diffraction intensity Ib at a midpoint angle between peak angle 2?(002) of the diffraction line derived from the (002) plane and peak angle 2?(200) of the diffraction line derived from the (200) plane is 2 to 10. The product r·Sa of mean particle size r (?m) of the barium titanate and specific surface area Sa (m2/g) is 1 to 2.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: September 20, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
  • Publication number: 20050116393
    Abstract: A method of manufacturing a multilayer ceramic capacitor includes the steps of: preparing a mixture of a raw material powder mainly composed of barium titanate particles; forming the mixture and a binder into a green sheet; alternately layering the green sheet and an internal electrode to obtain a laminated body; and sintering the laminated body. The step of preparing the mixture includes the steps of: introducing the raw material powder and the dispersion medium into a mixing container, and stirring them with balls serving as a mixing medium, to obtain a slurry containing a raw material powder mixture; and drying the slurry. The mixing medium has a diameter that is equal to or less than 400 times the mean particle size of the barium titanate particles of the raw material. The present invention provides a multilayer ceramic capacitor having good DC bias characteristics by suppressing the variation in crystal particles.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 2, 2005
    Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
  • Publication number: 20050102808
    Abstract: The present invention relates to a method of manufacturing a multilayer ceramic capacitor, comprising the steps of: (a) alternately layering internal electrodes and ceramic green sheets containing a ceramic material comprising barium titanate to form a laminated body; (b) sintering the laminated body to obtain a sintered body; and (c) forming an external electrode on end faces of the sintered body to obtain a multilayer ceramic capacitor. The barium titanate has a diffraction line derived from (002) plane and a diffraction line derived from (200) plane in an X-ray diffraction chart. The ratio I(200)/Ib of peak intensity I(200)at 2?(200) to diffraction intensity Ib at a midpoint angle between peak angle 2?(002) of the diffraction line derived from the (002) plane and peak angle 2?(200) of the diffraction line derived from the (200) plane is 2 to 10. The product r·Sa of mean particle size r (?m) of the barium titanate and specific surface area Sa (m2/g) is 1 to 2.
    Type: Application
    Filed: October 24, 2003
    Publication date: May 19, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
    Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai