Patents by Inventor Noriaki HAMACHI

Noriaki HAMACHI 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: 11527350
    Abstract: A multilayer coil component includes an element body including a plurality of laminated insulator layers, and a coil disposed in the element body. The coil includes a first coil conductor having a first inner diameter, a second coil conductor having a second inner diameter smaller than the first inner diameter, and a connection conductor connecting the first coil conductor and the second coil conductor. The second coil conductor is adjacent to the first coil conductor in a direction in which the plurality of insulator layers are laminated. The connection conductor has a shape along the first coil conductor and the second coil conductor.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: December 13, 2022
    Assignee: TDK CORPORATION
    Inventors: Yuto Shiga, Hajime Kato, Kazuya Tobita, Youichi Kazuta, Noriaki Hamachi, Makoto Yoshino
  • Publication number: 20220319763
    Abstract: A multilayer coil component 1 includes an element body 2, a coil 5, a first terminal electrode 3, a second terminal electrode 4, a first connection conductor 6, and a second connection conductor 7. The coil 5 includes a first coil portion 8 that has one end of the coil 5 and is disposed on a side of a main surface 2c and a second coil portion 9 that has the other end of the coil 5 and is disposed on a side of the main surface 2d. A distance L2 between the first connection conductor 6 and the second coil portion 9 is larger than a distance L1 between the first connection conductor 6 and the first coil portion 8.
    Type: Application
    Filed: March 28, 2022
    Publication date: October 6, 2022
    Applicant: TDK CORPORATION
    Inventors: Kazuya TOBITA, Youichi KAZUTA, Yuto SHIGA, Yuichi TAKUBO, Junichiro URABE, Noriaki HAMACHI, Toshinori MATSUURA
  • Publication number: 20220310320
    Abstract: A method for manufacturing a multilayer coil component 1 includes: a step of forming an insulator layer 10; a step of forming a first coil conductor 20, a second coil conductor 21, a third coil conductor 22, and a fourth coil conductor 23; a step of obtaining a laminate L formed by laminating the insulator layer 10, the first coil conductor 20, the second coil conductor 21, the third coil conductor 22, and the fourth coil conductor 23; and a step of forming terminal electrodes 4 and 5 on the outer surface of the laminate L by a photolithography method.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 29, 2022
    Applicant: TDK CORPORATION
    Inventors: Noriaki HAMACHI, Toshinori MATSUURA, Junichiro URABE, Kazuya TOBITA, Yuto SHIGA, Youichi KAZUTA, Yuichi TAKUBO
  • Publication number: 20220310305
    Abstract: A multilayer coil component 1 includes an element body 2, a coil 5, a first terminal electrode 3, a second terminal electrode 4, a first connecting conductor 6, and a second connecting conductor 7. The first connecting conductor 6 extends along a first direction D1 and has a third side 6c intersecting with a second direction D2 and a third direction D3 in a cross section orthogonal to the extension direction. The coil 5 faces the third side 6c of the first connecting conductor 6 when viewed from the first direction D1, and a side 5a facing the third side 6c is parallel to the third side 6c at the part that faces the third side 6c of the first connecting conductor 6.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 29, 2022
    Applicant: TDK CORPORATION
    Inventors: Youichi KAZUTA, Kazuya TOBITA, Yuto SHIGA, Yuichi TAKUBO, Junichiro URABE, Noriaki HAMACHI, Toshinori MATSUURA
  • Publication number: 20220301764
    Abstract: A multilayer coil component includes: a through hole connecting portion electrically connecting an end portion of the coil portion and the external terminal, in which a coil pattern and a through hole pattern are formed in each of the plurality of layers, the through hole connecting portion is formed by mutually joining a plurality of the through hole patterns in the lamination direction, the through hole pattern in at least one first layer among the plurality of layers is shifted with respect to the through hole pattern in another second layer when viewed from the lamination direction, and, when viewed from the lamination direction, a distance between the through hole pattern in the first layer and a coil pattern in the first layer is farther than a distance between the through hole pattern in the second layer and the coil pattern in the first layer.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 22, 2022
    Applicant: TDK CORPORATION
    Inventors: Kazuya TOBITA, Youichi KAZUTA, Yuichi TAKUBO, Junichiro URABE, Noriaki HAMACHI, Yuto SHIGA, Toshinori MATSUURA
  • Publication number: 20220293333
    Abstract: A coil component includes an exterior body, a coil, and a pair of terminal electrodes. The coil is disposed inside the exterior body. The pair of terminal electrodes are electrically connected to the coil and are disposed on the exterior body. The exterior body includes a first portion that covers the coil and is made of a resin, and a second portion including a side surface on which the pair of terminal electrodes are disposed. The second portion includes a material having a relative permittivity lower than a relative permittivity of the resin and is disposed between the coil and the pair of terminal electrodes.
    Type: Application
    Filed: March 9, 2022
    Publication date: September 15, 2022
    Applicant: TDK CORPORATION
    Inventors: Junichiro URABE, Hajime KATO, Toshinori MATSUURA, Kazuya TOBITA, Yuto SHIGA, Yuichi TAKUBO, Youichi KAZUTA, Noriaki HAMACHI
  • Publication number: 20220293324
    Abstract: In a coil component, a coil is disposed in the element body and has a pair of tip portions. A pair of external electrodes are disposed on an outer surface of the element body and respectively connected to the pair of tip portions. The element body includes a core portion including a shaft portion and a pair of side end portions. The shaft portion extends in a first direction, and the coil is wound around the shaft portion. The pair of side end portions are continuous with both ends of the shaft portion in the first direction. The shaft portion and the pair of side end portions are integrally formed of the same material. The shaft portion is covered with a resin molding portion. At least a part of the pair of side end portions is exposed from the resin molding portion.
    Type: Application
    Filed: February 28, 2022
    Publication date: September 15, 2022
    Applicant: TDK CORPORATION
    Inventors: Hajime KATO, Junichiro URABE, Toshinori MATSUURA, Kazuya TOBITA, Yuto SHIGA, Yuichi TAKUBO, Youichi KAZUTA, Noriaki HAMACHI
  • Publication number: 20220246346
    Abstract: A multilayer coil component includes: an element body including a plurality of insulator layers that are laminated; a coil; and a pair of external terminals. The element body has a rectangular parallelepiped shape. The element body includes a pair of main surfaces opposing each other in a first direction, a pair of end surfaces opposing each other in a second direction, and a pair of side surfaces opposing each other in a third direction. The pair of external terminals are separated from each other in the second direction. The pair of external terminals are embedded in the element body apart from the pair of end surfaces and the pair of side surfaces. Each of the pair of external terminals includes an exposed surface exposed from one of the main surfaces and an inner surface disposed in the element body. The inner surface includes a depression or a protrusion.
    Type: Application
    Filed: February 2, 2022
    Publication date: August 4, 2022
    Applicant: TDK CORPORATION
    Inventors: Yuto SHIGA, Youichi KAZUTA, Yuichi TAKUBO, Junichiro URABE, Noriaki HAMACHI, Kazuya TOBITA, Toshinori MATSUURA
  • Publication number: 20220216003
    Abstract: A multilayer inductor includes: an element body formed by stacking a plurality of layers of insulators in a stacking direction; a terminal electrode provided on at least one side surface of the element body; and a linear conductor portion provided in the element body and extending in a first direction, wherein, as viewed from a second direction perpendicular to the first direction, the conductor portion has a first portion in a region overlapping the terminal electrode and a second portion in a region not overlapping the terminal electrode, and wherein a width of the first portion as viewed from the second direction is smaller than a width of the second portion.
    Type: Application
    Filed: January 5, 2022
    Publication date: July 7, 2022
    Applicant: TDK CORPORATION
    Inventors: Noriaki HAMACHI, Toshinori MATSUURA, Junichiro URABE, Kazuya TOBITA, Yuto SHIGA, Youichi KAZUTA, Yuichi TAKUBO
  • Publication number: 20220189683
    Abstract: A multilayer coil component includes an element body, a coil, and an external terminal. The element body includes a plurality of insulator layers that is laminated. The coil is disposed in the element body. The external terminal includes a plurality of conductor layers that is laminated. The external terminal is electrically connected to the coil. The element body includes a main face and a first side face adjacent to the main face. The external terminal is embedded in the element body in such a way as to be separated from the first side face and exposed from the main face. The external terminal includes a first separated face that is separated from the first side face as being separated from the main face.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 16, 2022
    Applicant: TDK CORPORATION
    Inventors: Yuto SHIGA, Youichi KAZUTA, Yuichi TAKUBO, Junichiro URABE, Noriaki HAMACHI, Kazuya TOBITA, Toshinori MATSUURA
  • Publication number: 20220139611
    Abstract: A multilayer coil component 1 includes an element body 2, a coil 10, and a pair of terminal electrodes 3. The element body 2 has a groove portion 20 provided on a main surface 2c. The groove portion 20 is disposed between the pair of terminal electrodes 3 and extends over one side surface 2e and the other side surface 2f. The depth of the groove portion 20 in the direction in which the main surface 2c and a main surface 2d, which are a pair, face each other is smaller than the thickness of each of the pair of terminal electrodes 3 in the facing direction.
    Type: Application
    Filed: October 29, 2021
    Publication date: May 5, 2022
    Applicant: TDK CORPORATION
    Inventors: Yuichi TAKUBO, Masaki TAKAHASHI, Youichi KAZUTA, Yuto SHIGA, Junichiro URABE, Noriaki HAMACHI, Kazuya TOBITA, Toshinori MATSUURA
  • Publication number: 20220139610
    Abstract: A multilayer coil component 1 includes an element body 2, a pair of terminal electrodes 3, and a glass layer G provided on the terminal electrode 3. Each of the pair of terminal electrodes 3 is provided with a plurality of first projecting portions 33 tapered toward the other facing terminal electrode 3 side in an end portion 31b facing the side in the facing direction of a pair of end surfaces 2a and 2b. The glass layer G is provided along the edge of the terminal electrode 3 including at least the first projecting portion 33 in the end portion 31b of the terminal electrode 3.
    Type: Application
    Filed: October 29, 2021
    Publication date: May 5, 2022
    Applicant: TDK CORPORATION
    Inventors: Youichi KAZUTA, Yuichi TAKUBO, Yuto SHIGA, Junichiro URABE, Noriaki HAMACHI, Kazuya TOBITA, Toshinori MATSUURA
  • Publication number: 20210280362
    Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and a terminal electrode disposed on the element body. The element body has a first side face and a second side face, a first end face and a second end face, and a first main face and a second main face. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion has a first exposed face exposed on the first main face. The second electrode portion has a second exposed face exposed on the first end face. The first exposed face and the second exposed face are adjacent to each other interposing a ridge portion. The first exposed face is separated from an outer edge of the first main face. The second exposed face is separated from an outer edge of the first end face.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 9, 2021
    Applicant: TDK CORPORATION
    Inventors: Yuto SHIGA, Hajime KATO, Junichiro URABE, Kazuya TOBITA, Youichi KAZUTA, Noriaki HAMACHI, Toshinori MATSUURA, Yuichi TAKUBO
  • Publication number: 20210272743
    Abstract: A multilayer coil component includes an element body, a coil, and a terminal electrode. The element body includes a first main face, second main face, first end face, second end face, first side face and second side face. The terminal electrode is connected to the coil. The terminal electrode includes a main-face electrode portion provided on the first main face. The coil includes a plurality of coil conductors. The plurality of coil conductors includes a first coil conductor disposed closest to the first main face to oppose to the main-face electrode portion and a second coil conductor disposed closer to the second main face than the first coil conductor. The first coil conductor has a width narrower than a width of the second coil conductor. The first coil conductor has an aspect ratio higher than an aspect ratio of the second coil conductor.
    Type: Application
    Filed: February 17, 2021
    Publication date: September 2, 2021
    Applicant: TDK CORPORATION
    Inventors: Hajime KATO, Junichiro URABE, Yuto SHIGA, Kazuya TOBITA, Youichi KAZUTA, Noriaki HAMACHI, Toshinori MATSUURA, Yuichi TAKUBO, Munehiro TAKAKU
  • Publication number: 20210249184
    Abstract: In a coil 5 of a multilayer coil component 1, an end portion 6a of a turn 6 closest to a side surface 2e in the facing direction of the side surface 2e and a side surface 2f is connected to a first external electrode 3 and an end portion 11a of a turn 11 closest to the side surface 2f in the facing direction of the pair of side surfaces 2e and 2f is connected to a second external electrode 4. The area at which the turn 6 faces the second external electrode 4 and the area at which the turn 11 faces the first external electrode 3 are smaller than the area at which turns 7, 8, 9, and 10 other than the turn 6 and the turn 11 face the first external electrode 3 or the second external electrode 4.
    Type: Application
    Filed: February 3, 2021
    Publication date: August 12, 2021
    Applicant: TDK CORPORATION
    Inventors: Junichiro URABE, Hajime KATO, Yuto SHIGA, Kazuya TOBITA, Youichi KAZUTA, Noriaki HAMACHI, Toshinori MATSUURA, Yuichi TAKUBO, Asami TAKAHASHI, Munehiro TAKAKU
  • Publication number: 20210249183
    Abstract: In a coil 5 of a multilayer coil component 1, an end portion 6a of a turn 6 closest to a side surface 2e in the facing direction of the side surface 2e and a side surface 2f is connected to a first external electrode 3 and an end portion 11a of a turn 11 closest to the side surface 2f in the facing direction is connected to a second external electrode 4. When viewed from the facing direction, the area of the region where the turn 6 and the second external electrode 4 face each other and the area of the region where the turn 11 and the first external electrode 3 face each other are larger than the area of the region where turns other than the turn 6 and the turn 11 and the first external electrode 3 or the second external electrode 4 face each other.
    Type: Application
    Filed: February 3, 2021
    Publication date: August 12, 2021
    Applicant: TDK CORPORATION
    Inventors: Junichiro URABE, Hajime KATO, Yuto SHIGA, Kazuya TOBITA, Youichi KAZUTA, Noriaki HAMACHI, Toshinori MATSUURA, Yuichi TAKUBO, Asami TAKAHASHI, Munehiro TAKAKU
  • Publication number: 20210020357
    Abstract: A multilayer coil component includes an element body, a coil, and a pair of terminal electrodes. Each of the pair of terminal electrodes is formed by a plurality of electrode layers having different shapes being stacked in a stacking direction and is exposed on end surfaces, a main surface, and a pair of side surfaces. One electrode part of the terminal electrodes exposed on the side surfaces of the element body and formed by one of the electrode layers has an overlapping part overlapping at least a part of the other electrode part formed by another of the electrode layers adjacent to the one electrode layer in the stacking direction and a non-overlapping part not overlapping the other electrode part when viewed from the stacking direction.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Applicant: TDK CORPORATION
    Inventors: Youichi KAZUTA, Kazuya TOBITA, Yuto SHIGA, Noriaki HAMACHI
  • Publication number: 20210012947
    Abstract: An electronic component according to an aspect of the present disclosure includes an element body and a terminal electrode. The element body includes an outer surface provided with a depression. The terminal electrode is disposed on the element body. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion is disposed in the depression. The second electrode portion protrudes from the depression. The second electrode portion is thicker than the first electrode portion.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Applicant: TDK CORPORATION
    Inventors: Yuya ISHIMA, Shinichi KONDO, Kosuke ITO, Shingo HATTORI, Kazuya TOBITA, Noriaki HAMACHI, Atsushi MORIYA
  • Publication number: 20200402701
    Abstract: A pair of terminal electrodes 4 and 5 have electrode parts 4a and 5a and electrode parts 4b and 5b when viewed from a stacking direction, respectively. A plurality of connection conductors are disposed at positions not overlapping a plurality of coil conductors when viewed from the stacking direction. At least two of the plurality of connection conductors are disposed in a first region A1 or a second region A2 between the terminal electrodes 4 and 5 and an outer edge 9a of a coil 9 when viewed from the stacking direction. The first region A1 and the second region A2 overlap the electrode parts 4a and 5a when viewed from the facing direction of a pair of end surfaces 2a and 2b and overlap the electrode parts 4b and 5b when viewed from the facing direction of a pair of main surfaces 2c and 2d.
    Type: Application
    Filed: June 15, 2020
    Publication date: December 24, 2020
    Applicant: TDK CORPORATION
    Inventors: Yuto SHIGA, Hajime KATO, Kazuya TOBITA, Youichi KAZUTA, Noriaki HAMACHI, Makoto YOSHINO
  • Publication number: 20200388426
    Abstract: A coil is disposed in an element body such that a gap between the coil and a first principal surface is larger than a gap between the coil and a second principal surface, and has a coil axis along a direction intersecting with a direction in which the first principal surface and the second principal surface oppose each other. A terminal electrode is disposed on the element body such that at least a part of the first principal surface and a part of the second principal surface are exposed. The coil includes a plurality of coil conductors separated from each other in a direction along the coil axis and a through-hole conductor connecting the coil conductors adjacent to each other in the direction along the coil axis. The through-hole conductor does not overlap the plurality of terminal electrodes when viewed from the direction along the coil axis.
    Type: Application
    Filed: May 18, 2020
    Publication date: December 10, 2020
    Applicant: TDK Corporation
    Inventors: Noriaki HAMACHI, Kazuya TOBITA, Youichi KAZUTA, Yuto SHIGA