Patents by Inventor Sakyo Hirose

Sakyo Hirose 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: 20220307735
    Abstract: An electrocaloric effect element includes a laminate including an electrode layer mainly including Pt and a ceramic layer that are stacked, in which the ceramic layer has a perovskite structure and mainly includes a ceramic including Pb, Sc, and Ta, where a content ratio of Sc is y, a content ratio of Ta is 1?y, and a range of the y is about 0.450?y?about 0.495.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 29, 2022
    Inventor: Sakyo HIROSE
  • Patent number: 10544061
    Abstract: The present application provides vanadium dioxide doped with Ti, or vanadium dioxide further doped with other atoms selected from the group of W, Ta, Mo, and Nb. The vanadium dioxide of the present application is excellent in moisture resistance and in which deterioration of endothermic characteristics due to moisture is suppressed.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: January 28, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sakyo Hirose
  • Patent number: 10497499
    Abstract: An oxide ceramic expressed by the general formula Sr2-xBaxCo2-yMgyFe12-zAlzO22, where 0.7?x?1.3, 0<y?0.8, and 0.8?z?1.2.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 3, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Patent number: 10364161
    Abstract: A ceramic material has a composition represented by the formula: La1-x-yAEyMnO3 in which AE is at least one of Ca and Sr; x satisfies 0<x?about 0.20; and y satisfies 0<y?about 0.10.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 30, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Sakyo Hirose, Hayato Katsu
  • Publication number: 20190077677
    Abstract: A ceramic material has a composition represented by the formula: La-1-x-yAEyMnO3 in which AE is at least one of Ca and Sr; x satisfies 0<x ?about 0.20; and y satisfies 0<y?about 0.10.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Inventors: Sakyo HIROSE, Hayato KATSU
  • Patent number: 10134512
    Abstract: A ceramic material has a composition represented by Cax?NaxMny?MyO12, wherein M denotes at least one of Ni and Cu, and x?, x, y?, and y satisfy any of (a), (b), and (c) in which x?+x=X and y?+y=Y: 0.9 7.0 ? X Y < 1.0 7.0 ; ( a ) at a condition of X Y = 1.0 7.0 , 0.03 8 ? x X + Y < 0.30 8 ? ? and ? ? 0 ? y X + Y ? 0.35 8 ; and ( b ) 1.0 7.0 < X Y ? 1.0 6.9 .
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: November 20, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sakyo Hirose
  • Patent number: 9947460
    Abstract: An oxide ceramic represented by the general formula [Sr2?xBaxCo2?y(ZnuNi1?u)yFe12?zAlzO22]. In the formula, 0.7?x?1.3 and 0.8?z?1.2. y is 0?y?0.8 when 0.5?u?1.0 and is 0?y?1.6 when 0?u?0.5. y is preferably 0.4 or less. Further, a variable inductor as a ceramic electronic component has a component base body formed from the oxide ceramic.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: April 17, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Publication number: 20180082770
    Abstract: A ceramic material has a composition represented by Cax?NaxMny?MyO12, wherein M denotes at least one of Ni and Cu, and x?, x, y?, and y satisfy any of (a), (b), and (c) in which x?+x=X and y?+y=Y: 0.9 7.0 ? X Y < 1.0 7.0 ; ( a ) at a condition of X Y = 1.0 7.0 , 0.03 8 ? x X + Y < 0.30 8 ? ? and ? ? 0 ? y X + Y ? 0.35 8 ; and ( b ) 1.0 7.0 < X Y ? 1.0 6.9 .
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Inventor: Sakyo HIROSE
  • Patent number: 9868672
    Abstract: The present disclosure provides a ceramic material containing a vanadium oxide, and 50 to 400 ppm by mass of nitrogen with respect to the vanadium oxide. The ceramic material according to the present disclosure less varies in the amount of heat absorption. A cooling device comprising the ceramic material is also provided.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: January 16, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sakyo Hirose
  • Publication number: 20170349495
    Abstract: The present application provides vanadium dioxide doped with Ti, or vanadium dioxide further doped with other atoms selected from the group of W, Ta, Mo, and Nb. The vanadium dioxide of the present application is excellent in moisture resistance and in which deterioration of endothermic characteristics due to moisture is suppressed.
    Type: Application
    Filed: August 25, 2017
    Publication date: December 7, 2017
    Inventor: Sakyo HIROSE
  • Patent number: 9815742
    Abstract: An oxide ceramic having a principal component formed of a ferrite compound containing at least Sr, Co, and Fe, and zirconium in an amount of 0.05 to 1.0 wt. % on an oxide equivalent basis, and a ceramic electronic component using the oxide ceramic.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: November 14, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Publication number: 20170121229
    Abstract: The present disclosure provides a ceramic material containing a vanadium oxide, and 50 to 400 ppm by mass of nitrogen with respect to the vanadium oxide. The ceramic material according to the present disclosure less varies in the amount of heat absorption. A cooling device comprising the ceramic material is also provided.
    Type: Application
    Filed: January 16, 2017
    Publication date: May 4, 2017
    Inventor: Sakyo Hirose
  • Publication number: 20170069413
    Abstract: An oxide ceramic expressed by the general formula Sr2-xBaxCo2-yMgyFe12-zAlzO22, where 0.7?x?1.3, 0<y?0.8, and 0.8?z?1.2.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Patent number: 9496492
    Abstract: A resistance switching device having a high resistance variation ratio, an excellent response characteristic, an excellent resistance memory characteristic (retention characteristics) and an excellent repeat resistance. The resistance switching device comprises an n-type oxide semiconductor and first and second electrodes which are disposed so as to interpose at least a part of the n-type oxide semiconductor therebetween wherein a Schottky junction which provides resistance variation/memory characteristics by the application of voltage having different polarities between the first and second electrodes is formed at an interface between the n-type oxide semiconductor and the first electrode; and the first electrode is positioned such that it is in contact with the n-type oxide semiconductor, and has a lower layer which is formed from Au oxide or a Pt oxide or Au or Pt containing oxygen having the thickness of 1-50 nm.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: November 15, 2016
    Assignees: MURATA MANUFACTURING CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Sakyo Hirose, Naoki Ohashi, Hideki Yoshikawa
  • Publication number: 20160155562
    Abstract: An oxide ceramic represented by the general formula [Sr2?xBaxCo2?y(ZnuNi1?u)yFe12?zAlzO22]. In the formula, 0.7?x?1.3 and 0.8?z?1.2. y is 0?y?0.8 when 0.5?u?1.0 and is 0?y?1.6 when 0?u?0.5. y is preferably 0.4 or less. Further, a variable inductor as a ceramic electronic component has a component base body formed from the oxide ceramic.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventors: SAKYO HIROSE, Tsuyoshi Kimura
  • Patent number: 9153366
    Abstract: A resistance element that includes a resistor made of a thin film containing VO2 as a main component and at least one of W, Nb, Mo and Ti as an additive element. The thin film has a plurality of layer regions distributed in the direction of thickness thereof, and amounts of the additive elements doped in the layer regions are different from each other between the adjacent layer regions. Terminal electrodes are disposed such that a current flows through the plural layer regions of the resistor. Preferably, an interval at which the plural layer regions are distributed is selected to be not less than 8 nm and not more than 35 nm.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 6, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sakyo Hirose
  • Publication number: 20150210597
    Abstract: An oxide ceramic having a principal component formed of a ferrite compound containing at least Sr, Co, and Fe, and zirconium in an amount of 0.05 to 1.0 wt. % on an oxide equivalent basis, and a ceramic electronic component using the oxide ceramic.
    Type: Application
    Filed: April 9, 2015
    Publication date: July 30, 2015
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Patent number: 9035273
    Abstract: A resistive switching memory device is provided with first to third electrodes. The first electrode forms a Schottky barrier which can develop a rectifying property and resistance change characteristics at an interface between the first electrode and an oxide semiconductor. The third electrode is made of a material which provides an ohmic contact with the oxide semiconductor. A control voltage is applied between the first and second electrodes, and a driving voltage is applied between the first and third electrodes.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: May 19, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sakyo Hirose
  • Patent number: 9030288
    Abstract: Provided is a resistive element which is excellent in inrush current resistance even in the case of having a surface-mountable small chip shape. The resistive element has an element main body composed of a semiconductor ceramic in which a main constituent thereof is composed of a Mn compound represented by the general formula (Nd1-xMx)yBazMn2O6 (M is at least one rare-earth element selected from Sm, Gd, Eu, Tb, Dy, Ho, Er, and Y), and x, y, and z respectively meet the conditions of: 0.05?x?0.4; 0.80?y?1.2; and 0.80?z?1.2 in the chemical formula.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: May 12, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Sakyo Hirose
  • Patent number: 8981893
    Abstract: Provided is a resistive element which has excellent inrush current resistance, and can suppress heat generation in a steady state. The resistive element has an element main body of a semiconductor ceramic in which the main constituent has a structure of R11-xR2xBaMn2O6 in which 0.05?x?1.0 when R1 is Nd and R2 is at least one of Sm, Eu and Gd; 0.05?x?0.8 when R1 is Nd and R2 is at least one of Tb, Dy, Ho, Er, and Y; 0?x?0.4 when R1 is at least one of Sm, Eu, and Gd and R2 is at least one of Tb, Dy, Ho, and Y; and 0?x?1.0 when R1 is at least one of Sm, Eu, and Gd and R2 is at least one of Sm, Eu, and Gd, but the Sm, Eu, and/or Gd in R1 is different from that in R2.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: March 17, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Sakyo Hirose