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).
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Patent number: 11091623Abstract: 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: GrantFiled: November 18, 2015Date of Patent: August 17, 2021Assignee: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kazuki Hirata, Hiroshi Sugata
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Publication number: 20200323040Abstract: 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: ApplicationFiled: June 18, 2020Publication date: October 8, 2020Inventors: Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
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Publication number: 20200222891Abstract: 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: ApplicationFiled: March 27, 2020Publication date: July 16, 2020Inventors: Junichi NARUSE, Takehiro TOKUNO, Kazuki HIRATA, Yasushi TAKAYAMA
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Publication number: 20200154524Abstract: 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: ApplicationFiled: December 27, 2019Publication date: May 14, 2020Inventors: Takehiro TOKUNO, Junichi NARUSE, Kazuki HIRATA, Mika KAWAKITA, Yasushi TAKAYAMA
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Patent number: 10510347Abstract: 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: GrantFiled: December 7, 2017Date of Patent: December 17, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan UniversityInventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
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Publication number: 20180258273Abstract: 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: ApplicationFiled: November 18, 2015Publication date: September 13, 2018Applicant: Dexerials CorporationInventors: Ken HOSOYA, Akihiro HORII, Kei OBATA, Taku ISHIMORI, Kazuki HIRATA, Hiroshi SUGATA
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Publication number: 20180166077Abstract: 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: ApplicationFiled: December 7, 2017Publication date: June 14, 2018Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan UniversityInventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
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Publication number: 20170222287Abstract: 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: ApplicationFiled: October 27, 2015Publication date: August 3, 2017Inventors: Yosuke SUZUKI, Kenichirou KAMI, Kazuki HIRATA
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Patent number: 9670329Abstract: 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: GrantFiled: December 4, 2014Date of Patent: June 6, 2017Assignee: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
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Publication number: 20170152360Abstract: 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: ApplicationFiled: July 10, 2015Publication date: June 1, 2017Applicant: DEXERIALS CORPORATIONInventors: Kanako HASHIMOTO, Akihiro HORII, Kei OBATA, Ken HOSOYA, Taku ISHIMORI, Kazuki HIRATA
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Publication number: 20160311987Abstract: 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: ApplicationFiled: December 4, 2014Publication date: October 27, 2016Applicant: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
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Patent number: 7786036Abstract: 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: GrantFiled: March 24, 2006Date of Patent: August 31, 2010Assignee: Panasonic CorporationInventors: Kazuhiro Komatsu, Kazuki Hirata, Atsuo Nagai, Tadashi Onomi, Kenji Oka
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Publication number: 20080316676Abstract: 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: ApplicationFiled: September 7, 2005Publication date: December 25, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Hiroki Moriwake, Kazuki Hirata, Atsuo Nagai, Kazuhiro Komatsu
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Publication number: 20080199778Abstract: 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: ApplicationFiled: February 19, 2008Publication date: August 21, 2008Applicant: DENSO CorporationInventors: Kazuki Hirata, Kyohei Usami, Manabu Yamada
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Publication number: 20080115876Abstract: 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: ApplicationFiled: March 24, 2006Publication date: May 22, 2008Inventors: Kazuhiro Komatsu, Kazuki Hirata, Atsuo Nagai, Tadashi Onomi, Kenji Oka
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Patent number: 7335328Abstract: 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: GrantFiled: October 24, 2003Date of Patent: February 26, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
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Patent number: 6947276Abstract: 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: GrantFiled: October 24, 2003Date of Patent: September 20, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
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Publication number: 20050116393Abstract: 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: ApplicationFiled: October 24, 2003Publication date: June 2, 2005Inventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai
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Publication number: 20050102808Abstract: 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: ApplicationFiled: October 24, 2003Publication date: May 19, 2005Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTDInventors: Kazuki Hirata, Kenji Oka, Kazuhiro Komatsu, Atsuo Nagai