Patents by Inventor Masakazu Hirose

Masakazu 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).

  • Patent number: 11005028
    Abstract: A piezoelectric composition including copper, germanium and a complex oxide represented by a compositional formula KmNbO3 and having a perovskite structure, in which m in the compositional formula satisfies 0.970?m?0.999, and with respect to 1 mol of the complex oxide, x mol % of copper in terms of a copper element and y mol % of germanium in terms of a germanium element are contained, wherein x satisfies 0.100?x?1.000 and y satisfies 0.000<y?1.500.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 11, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroki Katoh, Yuiko Hirose, Masakazu Hirose, Mirai Ishida
  • Publication number: 20210091298
    Abstract: A piezoelectric composition containing: a complex oxide having a perovskite structure represented by a general formula of ABO3; copper; and one or more elements selected from the group consisting of chromium, nickel and zinc, in which in ABO3, an A-site element is potassium and a B-site element is niobium, or niobium and tantalum, with respect to 1 mol of the complex oxide, a content ratio of the copper is ? mol % in terms of CuO, a content ratio of one or more elements selected from the group consisting of chromium, nickel and zinc is ? mol % in terms of CrO3/2, NiO, ZnO, ? satisfies a relationship of 0.2???2.5, and ? satisfies a relationship of 0.2???2.0.
    Type: Application
    Filed: March 19, 2019
    Publication date: March 25, 2021
    Applicant: TDK CORPORATION
    Inventors: Masakazu HIROSE, Yuiko HIROSE, Hiroki KATOH, Tamotsu SASAKI, Yuji UMEDA
  • Publication number: 20210074252
    Abstract: An electronic wind instrument and a control method thereof are provided. The electronic wind instrument includes an acquisition unit which acquires an operation performed on a playing operator, a breathing detection unit which detects breathing, and a control unit which generates a musical sound signal on the basis of at least one of the breathing that has been detected and the operation acquired by the acquisition unit, in which the control unit switches a first mode for generating a musical sound signal with a detection of the breathing as a condition and a second mode for generating the musical sound signal on the basis of the operation regardless of whether or not the breathing has been detected, on the basis of a detection result of the breathing.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 11, 2021
    Applicant: Roland Corporation
    Inventors: Masakazu HIROSE, Yuji TERADA
  • Publication number: 20200313072
    Abstract: A piezoelectric composition having a complex oxide including potassium and niobium, in which the complex oxide has a first phase represented by a compositional formula KNbO3, and one or two phases selected from a second phase represented by a compositional formula K4Nb6O17 and a third phase represented by a compositional formula KNb3O8.
    Type: Application
    Filed: March 20, 2018
    Publication date: October 1, 2020
    Applicant: TDK CORPORATION
    Inventors: Yuiko HIROSE, Hiroki KATOH, Masakazu HIROSE
  • Publication number: 20200295252
    Abstract: A piezoelectric composition including copper and a complex oxide having a perovskite structure represented by a general formula ABO3, in which an A site element in the ABO3 is potassium or potassium and sodium, a B site element in the ABO3 is niobium or niobium and tantalum, the copper is included in n mol % in terms of a copper element with respect to 1 mol of the complex oxide, and n satisfies 0.100?n?1.000.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 17, 2020
    Applicant: TDK CORPORATION
    Inventors: Hiroki KATOH, Yuiko HIROSE, Masakazu HIROSE
  • Publication number: 20200243748
    Abstract: A piezoelectric composition including manganese and a complex oxide having a perovskite structure represented by a general formula ABO3, wherein an A site element in the ABO3 is potassium or potassium and sodium, a B site element in the ABO3 is niobium, a concentration distribution of the manganese has a variation, and the variation shows a CV value of 35% or more and 440% or less.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 30, 2020
    Applicant: TDK CORPORATION
    Inventors: Masakazu HIROSE, Yuiko HIROSE, Hiroki KATOH
  • Patent number: 10504650
    Abstract: A multi-layer ceramic capacitor is disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a low-Bi phase in which a Bi concentration is no greater than 0.8 times the mean Bi concentration in the dielectric composition as a whole.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: December 10, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Tomoya Imura, Goushi Tauchi, Masakazu Hirose, Tomohiro Terada
  • Patent number: 10497514
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electric component are disclosed. In an embodiment a dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a high-Bi phase in which the Bi concentration is at least 1.2 times the mean Bi concentration in the dielectric composition as a whole.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: December 3, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Tomoya Imura, Goushi Tauchi, Masakazu Hirose, Tomohiro Terada
  • Patent number: 10497512
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO3, and wherein ?<0.20, where ? is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: December 3, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Goushi Tauchi, Masakazu Hirose, Tomoya Imura, Tomohiro Terada
  • Patent number: 10490350
    Abstract: A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion and wherein the content of Bi present in the core portion is at least 1.2 times the content of Bi present in the shell portion.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 26, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Goushi Tauchi, Masakazu Hirose, Tomoya Imura, Tomohiro Terada
  • Patent number: 10475577
    Abstract: A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO3 and wherein ? is set to 0.20???0.70, where ? is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 12, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Masakazu Hirose, Goushi Tauchi, Tomoya Imura, Tomohiro Terada
  • Patent number: 10475576
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein the content of the at least one element selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg or Zn is between 0.5 molar parts and 11.1 molar parts, taking the Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is the molar ratio of Bi with respect to Sr in the dielectric composition, and wherein at least some of the particles include a high-Bi phase having a Bi concentration of at least 1.2 times the mean Bi concentration of the dielectric composition as a whole.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 12, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Masakazu Hirose, Tomoya Imura, Tomohiro Terada, Goushi Tauchi
  • Patent number: 10450234
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment a dielectric composition includes particles comprising a perovskite crystal structure including at least Bi, Na, Sr and Ti and at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein a content of the element is between 0.5 molar pails and 11.1 molar parts, defining a Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is a molar ratio of Bi with respect to Sr in the dielectric composition, wherein at least some of the particles include a low-Bi phase, and wherein a total surface area of the low-Bi phase within the particles is between 0.1% and 15% of the total surface area of the particles.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 22, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Masakazu Hirose, Goushi Tauchi, Tomoya Imura, Tomohiro Terada
  • Patent number: 10438745
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion, and wherein the content of Bi present in the core portion is no greater than 0.83 times the content of Bi present in the shell portion.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 8, 2019
    Assignee: TDK ELECTRONICS AG
    Inventors: Masakazu Hirose, Tomoya Imura, Tomohiro Terada, Goushi Tauchi
  • Publication number: 20190288181
    Abstract: A piezoelectric composition including copper, germanium and a complex oxide represented by a compositional formula KmNbO3 and having a perovskite structure, in which m in the compositional formula satisfies 0.970? m?0.999, and with respect to 1 mol of the complex oxide, x mol % of copper in terms of a copper element and y mol % of germanium in terms of a germanium element are contained, wherein x satisfies 0.100 ?x?1.000 and y satisfies 0.000<y?1.500.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 19, 2019
    Applicant: TDK CORPORATION
    Inventors: Hiroki KATOH, Yuiko HIROSE, Masakazu HIROSE, Mirai ISHIDA
  • Publication number: 20180222801
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the content of the at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn is between 0.5 molar parts and 11.1 molar parts, taking the Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is the molar ratio of Bi with respect to Sr in the dielectric composition.
    Type: Application
    Filed: June 16, 2016
    Publication date: August 9, 2018
    Applicant: EPCOS AG
    Inventors: Masakazu Hirose, Goushi Tauchi, Tomoya Imura, Tomohiro Terada
  • Publication number: 20180218837
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein the content of the at least one element selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg or Zn is between 0.5 molar parts and 11.1 molar parts, taking the Ti content of the dielectric composition as 100 molar parts, wherein 0.17???2.83, where ? is the molar ratio of Bi with respect to Sr in the dielectric composition, and wherein at least some of the particles include a high-Bi phase having a Bi concentration of at least 1.2 times the mean Bi concentration of the dielectric composition as a whole.
    Type: Application
    Filed: June 16, 2016
    Publication date: August 2, 2018
    Inventors: Masakazu Hirose, Tomoya Imura, Tomohiro Terada, Goushi Tauchi
  • Publication number: 20180218838
    Abstract: A multi-layer ceramic capacitor is disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a low-Bi phase in which a Bi concentration is no greater than 0.8 times the mean Bi concentration in the dielectric composition as a whole.
    Type: Application
    Filed: June 16, 2016
    Publication date: August 2, 2018
    Inventors: Tomoya Imura, Goushi Tauchi, Masakazu Hirose, Tomohiro Terada
  • Publication number: 20180211781
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electric component are disclosed. In an embodiment a dielectric composition has a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes a high-Bi phase in which the Bi concentration is at least 1.2 times the mean Bi concentration in the dielectric composition as a whole.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 26, 2018
    Inventors: Tomoya Imura, Goushi Tauchi, Masakazu Hirose, Tomohiro Terada
  • Publication number: 20180211779
    Abstract: A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment the dielectric composition includes particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti, wherein at least some of the particles have a core-shell structure including a core portion and a shell portion, and wherein the content of Bi present in the core portion is no greater than 0.83 times the content of Bi present in the shell portion.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 26, 2018
    Inventors: Masakazu Hirose, Tomoya Imura, Tomohiro Terada, Goushi Tauchi