Patents by Inventor Hideyuki Itoh

Hideyuki Itoh 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: 20230298787
    Abstract: A soft magnetic metal particle comprises an Fe—Ni based soft magnetic metal. The soft magnetic metal particle includes both an fcc phase and a bcc phase. A magnetic element body includes the soft magnetic metal particle. A coil-type electronic component includes the magnetic element body and a coil conductor.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 21, 2023
    Applicant: TDK CORPORATION
    Inventors: Yu SAKURAI, Hidenobu Umeda, Hideyuki Itoh, Ryuichi Wada, Kouichi Kakuda
  • Publication number: 20220336140
    Abstract: A coil-type electronic component comprises an element including a magnetic element body and a coil conductor. A portion of the magnetic element body in between layers of the coil conductor adjacent to each other in an axis direction of the coil conductor includes first soft magnetic metal particles. A portion of the magnetic element body on an outer side along the axis includes second soft magnetic metal particles. The first soft magnetic metal particles have a saturation magnetization (Ms) higher than that of the second soft magnetic metal particles.
    Type: Application
    Filed: April 11, 2022
    Publication date: October 20, 2022
    Applicant: TDK CORPORATION
    Inventors: Yu SAKURAI, Takashi SUZUKI, Hideyuki ITOH, Kouichi KAKUDA, Ryuichi WADA, Nami ENOMOTO, Yusuke NAGAI, Kunihiko KAWASAKI, Shinichi KONDO, Yuya ISHIMA
  • Publication number: 20220336128
    Abstract: A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability ? and a specific resistance ? and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 20, 2022
    Applicant: TDK CORPORATION
    Inventors: Takashi SUZUKI, Yu SAKURAI, Hideyuki ITOH, Kouichi KAKUDA, Ryuichi WADA, Nami ENOMOTO, Yusuke NAGAI, Kunihiko KAWASAKI, Shinichi KONDO, Yuya ISHIMA
  • Patent number: 10607757
    Abstract: The present invention is a method of producing a soft magnetic metal powder comprising, a material powder preparation step of preparing a material powder comprising a particle including a boron and a soft magnetic metal including an iron, a first nitriding step of nitriding the boron included in said particle by carrying out a heat treatment to said material powder under a non-oxidizing atmosphere including nitrogen, and a spheroidizing step of spheroidizing said particle by carrying out a heat treatment to said material powder of after said first nitriding step under a non-oxidizing atmosphere having lower nitrogen partial pressure than a nitrogen partial pressure of the non-oxidizing atmosphere during said first nitriding step. According to the present invention, the soft magnetic metal powder comprising the particle having a shape of a complete sphere or close to complete sphere, and comprising the small standard deviation of the particle size distribution of the powder can be obtained.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 31, 2020
    Assignee: TDK CORPORATION
    Inventors: Yu Sakurai, Tomofumi Kuroda, Hideyuki Itoh
  • Patent number: 9881721
    Abstract: The present invention relates to a soft magnetic metal powder having iron as the main component and containing boron, wherein, the content of iron inside the soft magnetic metal powder is 98 mass % or more, the content of boron in the particle of the soft magnetic metal powder is 10 to 150 ppm, and the metal particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: January 30, 2018
    Assignee: TDK CORPORATION
    Inventors: Yu Sakurai, Tomofumi Kuroda, Hideyuki Itoh
  • Patent number: 9793035
    Abstract: The present invention relates to a soft magnetic metal powder which has Fe as the main component and contains Si and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of boron inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: October 17, 2017
    Assignee: TDK CORPORATION
    Inventors: Yu Sakurai, Tomofumi Kuroda, Hideyuki Itoh
  • Patent number: 9779861
    Abstract: The present invention relates to a soft magnetic metal powder which contains B and has Fe and Ni as the main components, wherein the content of Ni in the soft magnetic metal powder is 30 to 80 mass %, the total content of Fe and Ni in the soft magnetic metal powder is 90 mass % or more, the content of B inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: October 3, 2017
    Assignee: TDK CORPORATION
    Inventors: Yu Sakurai, Tomofumi Kuroda, Hideyuki Itoh
  • Patent number: 9455080
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of ferrite, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) winding around the winding portion core(s). The winding portion core(s) is/are formed using a soft magnetic metal core with a substantially constant cross sectional area. Junction portion cores composed of soft magnetic metal powder cores with a tabular shape are disposed at the spaces where the winding portion core(s) face(s) the yoke portion cores, and the area of the part where the junction portion core faces the yoke portion core is made to be 1.3 to 4.0 times that of the section of the winding portion core.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 27, 2016
    Assignee: TDK CORPORATION
    Inventors: Tomofumi Kuroda, Yu Sakurai, Hideyuki Itoh
  • Patent number: 9406430
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of a ferrite core, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) wound around the winding portion core(s). The winding portion core(s) is/are made of a soft magnetic metal core, and the cross sectional area of the part for winding the coil of the winding portion core is substantially constant. When the cross sectional area of the part for winding the coil of the winding portion core is set as S1, and the area of the parts opposite to the yoke portion cores in the winding portion core(s) is set as S2, the area ratio S2/S1 is set to be 1.3 to 4.0.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: August 2, 2016
    Assignee: TDK CORPORATION
    Inventors: Tomofumi Kuroda, Yu Sakurai, Hideyuki Itoh
  • Patent number: 9398236
    Abstract: An image capturing apparatus including a plurality of pixels arranged in a matrix and a signal processing unit configured to process signals read out from the pixels. In a first mode, a charge accumulation is controlled by an electronic shutter. In a second mode, the charge accumulation is controlled by a mechanical shutter. The signal processing unit corrects image data obtained from the plurality of pixels based on a signal obtained by the charge accumulation in the second mode.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: July 19, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Michiko Johnson, Masahiro Kobayashi, Hideyuki Itoh, Takeshi Ichikawa
  • Patent number: 9318525
    Abstract: A first pixel includes a first charge accumulation portion of a first conductivity type in a first region. A second pixel includes a second charge accumulation portion of the first conductivity type in a second region and a semiconductor region of a second conductivity type in a third region. Impurities of the second conductivity type are doped in the third region and the impurities of the second conductivity type are doped in at least the second region to generate a first difference between quantities of doping the impurities of the second conductivity type in the first and second regions. Impurities are doped in the first and second regions to reduce a second difference, caused by the first difference, between net quantities of doping impurities of the first conductivity type in the first and second regions.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 19, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideyuki Itoh
  • Publication number: 20150332823
    Abstract: The present invention relates to a soft magnetic metal powder having iron as the main component and containing boron, wherein, the content of iron inside the soft magnetic metal powder is 98 mass % or more, the content of boron in the particle of the soft magnetic metal powder is 10 to 150 ppm, and the metal particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 19, 2015
    Inventors: Yu SAKURAI, Tomofumi KURODA, Hideyuki ITOH
  • Publication number: 20150332824
    Abstract: The present invention relates to a soft magnetic metal powder which has Fe as the main component and contains Si and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of boron inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 19, 2015
    Inventors: Yu SAKURAI, Tomofumi KURODA, Hideyuki ITOH
  • Publication number: 20150332821
    Abstract: The present invention relates to a soft magnetic metal powder which contains B and has Fe and Ni as the main components, wherein the content of Ni in the soft magnetic metal powder is 30 to 80 mass %, the total content of Fe and Ni in the soft magnetic metal powder is 90 mass % or more, the content of B inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 19, 2015
    Inventors: Yu SAKURAI, Tomofumi KURODA, Hideyuki ITOH
  • Publication number: 20150213941
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of a ferrite core, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) wound around the winding portion core(s). The winding portion core(s) is/are made of a soft magnetic metal core, and the cross sectional area of the part for winding the coil of the winding portion core is substantially constant. When the cross sectional area of the part for winding the coil of the winding portion core is set as S1, and the area of the parts opposite to the yoke portion cores in the winding portion core(s) is set as S2, the area ratio S2/S1 is set to be 1.3 to 4.0.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 30, 2015
    Inventors: Tomofumi KURODA, Yu SAKURAI, Hideyuki ITOH
  • Publication number: 20150213942
    Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined The reactor is composed of a pair of yoke portion magnetic portions composed of ferrite, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) winding around the winding portion core(s). The winding portion core(s) is/are formed using a soft magnetic metal core with a substantially constant cross sectional area. Junction portion cores composed of soft magnetic metal powder cores with a tubular shape are disposed at the spaces where the winding portion core(s) face(s) the yoke portion cores, and the area of the part where the junction portion core faces the yoke portion core is made to be 1.3 to 4.0 times that of the section of the winding portion core.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 30, 2015
    Inventors: Tomofumi KURODA, Yu SAKURAI, Hideyuki ITOH
  • Publication number: 20150138404
    Abstract: An image capturing apparatus including a plurality of pixels arranged in a matrix and a signal processing unit configured to process signals read out from the pixels. In a first mode, a charge accumulation is controlled by an electronic shutter. In a second mode, the charge accumulation is controlled by a mechanical shutter. The signal processing unit corrects image data obtained from the plurality of pixels based on a signal obtained by the charge accumulation in the second mode.
    Type: Application
    Filed: October 21, 2014
    Publication date: May 21, 2015
    Inventors: Michiko Johnson, Masahiro Kobayashi, Hideyuki Itoh, Takeshi Ichikawa
  • Publication number: 20150064827
    Abstract: A first pixel includes a first charge accumulation portion of a first conductivity type in a first region. A second pixel includes a second charge accumulation portion of the first conductivity type in a second region and a semiconductor region of a second conductivity type in a third region. Impurities of the second conductivity type are doped in the third region and the impurities of the second conductivity type are doped in at least the second region to generate a first difference between quantities of doping the impurities of the second conductivity type in the first and second regions. Impurities are doped in the first and second regions to reduce a second difference, caused by the first difference, between net quantities of doping impurities of the first conductivity type in the first and second regions.
    Type: Application
    Filed: August 1, 2014
    Publication date: March 5, 2015
    Inventor: Hideyuki Itoh
  • Patent number: 8836052
    Abstract: An electromechanical transducer includes multiple elements each having multiple cells, with each cell including a first electrode formed from a conductive substrate, and a second electrode opposed to a first face of the conductive substrate and across a gap. The multiple cells of each of the elements are electrically connected, and the conductive substrate is divided for each of the elements by grooves extending from the first face to a second face which is opposite from the first face. In addition, insulating films are formed on opposing side walls of the conductive substrate and define each of the grooves, wherein a gap width of each of the grooves is narrower on the second face side of the conductive substrate than on the first face side of the conductive substrate.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideyuki Itoh, Takahiro Ezaki
  • Publication number: 20110140212
    Abstract: An electromechanical transducer includes: a conductive substrate; multiple elements which are disposed on a first face side of the substrate and which contain cells; grooves; and insulating films. The substrate has a second face which is opposite from the first face. The grooves run from the second face of the substrate to the first face of the substrate in a manner that electrically isolate the multiple elements from one another, thereby dividing the substrate and forming first electrodes. The insulating films are formed on opposing outer side walls of every two adjacent first electrodes across one of the grooves. The width between the insulating films is narrower on the second face side of the substrate than on the first face side of the substrate. The insulating films are thicker on the second face side than on the first face side.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideyuki Itoh, Takahiro Ezaki