Patents by Inventor Kazuhiro Tsukamoto

Kazuhiro Tsukamoto 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: 20250232909
    Abstract: An electronic component includes a first main body and a second main body. The second main body is mounted on a first surface of the first main body. The first main body includes a first region that overlaps the second main body when viewed in a stacking direction, and a second region that does not overlap the second main body when viewed in the stacking direction. At least a part of the plurality of capacitor conductors is disposed in the first region. At least one inductor conductor includes a major part disposed in the second region, and a non-major part. The non-major part is disposed in the second region, or is disposed at least in part in the first region.
    Type: Application
    Filed: January 8, 2025
    Publication date: July 17, 2025
    Applicant: TDK Corporation
    Inventors: Kazuhiro TSUKAMOTO, Takuya SATO
  • Publication number: 20250233572
    Abstract: A multilayer electronic component includes a first inductor, a second inductor, a capacitor, and a multilayer stack. The first inductor and the second inductor are arranged so that a first opening of the first inductor and a second opening of the second inductor do not face each other. The capacitor includes a capacitor conductor layer. The capacitor conductor layer includes a first overlapping portion overlapping with at least one first inductor conductor layer forming the first inductor when seen in a stacking direction.
    Type: Application
    Filed: January 13, 2025
    Publication date: July 17, 2025
    Applicant: TDK Corporation
    Inventor: Kazuhiro TSUKAMOTO
  • Publication number: 20250233578
    Abstract: A filter circuit includes an inductor provided between a signal path and a ground and including a first end electrically connected to the ground, a resonator provided between the signal path and the ground and including a third end electrically connected to the ground, and a capacitor provided on the signal path and electrically connected to a second end of the inductor and a fourth end of the resonator. The inductor is configured using an inductor element. The resonator is configured without using the inductor element.
    Type: Application
    Filed: January 8, 2025
    Publication date: July 17, 2025
    Applicant: TDK Corporation
    Inventor: Kazuhiro TSUKAMOTO
  • Patent number: 12261588
    Abstract: An electronic component includes a first main body including a plurality of dielectric layers stacked together, and a second main body mounted to the first main body. The second main body includes a first circuit section and a second circuit section that are each constituted by using at least one acoustic wave element and are electrically separated from each other. The first main body includes first to third ground conductor lavers located between the first and second circuit sections when seen in a Z direction.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: March 25, 2025
    Assignee: TDK CORPORATION
    Inventor: Kazuhiro Tsukamoto
  • Patent number: 12146504
    Abstract: A centrifugal compressor including: a diffuser in which a fluid flows in a centrifugal direction away from a rotary shaft; a return flow path which is provided downstream of the diffuser and in which fluid flowing in to a later-stage centrifugal impeller from the diffuser flows in a return direction back to the rotary shaft; a plurality of return vanes that are disposed in the shape of a circular vane centered on a centerline of the rotary shaft, and are installed in the return flow path; and a turning part, wherein an inlet blade angle (?) of an outlet guide vane provided to the downstream side, of the return vanes, is lying down more in the circumferential direction with respect to an inlet blade angle (?) of a inlet guide vane provided to the upstream side, of the return vanes (?<?).
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: November 19, 2024
    Assignee: HITACHI INDUSTRIAL PRODUCTS, LTD.
    Inventors: Kiyotaka Hiradate, Kazuhiro Tsukamoto, Yuta Mochizuki, Hiromi Kobayashi, Takahiro Nishioka
  • Publication number: 20240282497
    Abstract: An inductor includes a first inductor portion, and a second inductor portion that is connected in parallel with the first inductor portion. Each of the first and second inductor portions includes a conductor structure wound about an axis extending in a direction orthogonal to a stacking direction of a stack. The conductor structure of the first inductor portion includes first to third structures. The first structure includes three columnar conductors. The second structure includes three columnar conductors.
    Type: Application
    Filed: December 15, 2023
    Publication date: August 22, 2024
    Applicant: TDK CORPORATION
    Inventors: Takuya SATO, Kazuhiro TSUKAMOTO
  • Patent number: 12063024
    Abstract: An LC circuit includes a first capacitor provided between a first connection point and a second connection point, a second capacitor provided between the second connection point and a third connection point, a third capacitor provided between the third connection point and a fourth connection point, a fourth capacitor provided between the first connection point and the third connection point, a fifth capacitor provided between the second connection point and the fourth connection point, a first inductor connected to the second connection point, and a second inductor connected to the third connection point.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: August 13, 2024
    Assignee: TDK CORPORATION
    Inventor: Kazuhiro Tsukamoto
  • Patent number: 12049903
    Abstract: A multistage centrifugal compressor capable of maintaining and improving efficiency while having a static flow path with a reduced outer diameter is provided. Each of return flow paths is provided with a plurality of return vanes disposed in a circular cascade form centered on a center line of a rotational shaft. Each of the return vanes is disposed as a leading vane (8A) and a trailing vane (8B). The trailing vanes are offset toward the pressure surface side of the leading vanes in a circumferential direction and provided so as to guide a flow from the pressure surface side of the leading vanes to negative pressure surfaces of the trailing vanes.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: July 30, 2024
    Assignee: Hitachi Industrial Products, Inc.
    Inventors: Kiyotaka Hiradate, Kazuhiro Tsukamoto, Yuta Mochizuki, Hiromi Kobayashi, Takahiro Nishioka
  • Publication number: 20240151239
    Abstract: A multistage centrifugal compressor capable of maintaining and improving efficiency while having a static flow path with a reduced outer diameter is provided. Each of return flow paths is provided with a plurality of return vanes disposed in a circular cascade form centered on a center line of a rotational shaft. Each of the return vanes is disposed as a leading vane (8A) and a trailing vane (8B). The trailing vanes are offset toward the pressure surface side of the leading vanes in a circumferential direction and provided so as to guide a flow from the pressure surface side of the leading vanes to negative pressure surfaces of the trailing vanes.
    Type: Application
    Filed: September 21, 2021
    Publication date: May 9, 2024
    Inventors: Kiyotaka HIRADATE, Kazuhiro TSUKAMOTO, Yuta MOCHIZUKI, Hiromi KOBAYASHI, Takahiro NISHIOKA
  • Publication number: 20230417255
    Abstract: In the centrifugal compressor, the return channel is provided between a hub-side wall surface and a shroud-side wall surface. The return channel includes a front set of vanes arranged in a circular array on the upstream side and a rear set of vanes arranged in a circular array on the downstream side. The front set of vanes and the rear set of vanes are both formed on the shroud-side wall surface. The front set of vanes is formed on an annular member that is formed separately from the rear set of vanes. The annular member is fitted to the return channel. According to the above, it is possible to improve the tangential velocity component removal ability of front and rear vanes provided in the return channel of a centrifugal compressor.
    Type: Application
    Filed: October 27, 2021
    Publication date: December 28, 2023
    Inventors: Yuta MOCHIZUKI, Takahiro NISHIOKA, Kiyotaka HIRADATE, Kazuhiro TSUKAMOTO
  • Publication number: 20230375005
    Abstract: A centrifugal compressor including: a diffuser in which a fluid flows in a centrifugal direction away from a rotary shaft; a return flow path which is provided downstream of the diffuser and in which fluid flowing in to a later-stage centrifugal impeller from the diffuser flows in a return direction back to the rotary shaft; a plurality of return vanes that are disposed in the shape of a circular vane centered on a centerline of the rotary shaft, and are installed in the return flow path; and a turning part, wherein an inlet blade angle (?) of an outlet guide vane provided to the downstream side, of the return vanes, is lying down more in the circumferential direction with respect to an inlet blade angle (?) of a inlet guide vane provided to the upstream side, of the return vanes (?<?).
    Type: Application
    Filed: April 28, 2021
    Publication date: November 23, 2023
    Inventors: Kiyotaka HIRADATE, Kazuhiro TSUKAMOTO, Yuta MOCHIZUKI, Hiromi KOBAYASHI, Takahiro NISHIOKA
  • Patent number: 11711063
    Abstract: A filter device includes a filter including at least one inductor and at least one capacitor, and a stack of a plurality of dielectric layers and a plurality of conductor layers. The plurality of dielectric layers include at least one first dielectric layer formed of a first dielectric material and at least one second dielectric layer formed of a second dielectric material. The plurality of conductor layers include at least one first conductor layer in contact with the at least one first dielectric layer, and at least one second conductor layer in contact with the at least one second dielectric layer. The temperature coefficient of resonant frequency of the first dielectric material has a positive value. The temperature coefficient of resonant frequency of the second dielectric material has a negative value.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: July 25, 2023
    Assignee: TDK CORPORATION
    Inventors: Takuya Sato, Kazuhiro Tsukamoto
  • Patent number: 11705881
    Abstract: A branching filter includes a common port, a first signal port, a second signal port, a first filter, which is provided between the common port and the first signal port, that selectively passes a signal of a frequency within a first passband, a second filter, which is provided between the common port and the second signal port, that selectively passes a signal of a frequency within a second passband different from the first passband, and a capacitor that has a first end and a second end and connects the first filter and the second filter.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: July 18, 2023
    Assignee: TDK CORPORATION
    Inventors: Takuya Sato, Kazuhiro Tsukamoto, Masanori Tsutsumi
  • Publication number: 20230115011
    Abstract: An electronic component includes a first main body including a plurality of dielectric layers stacked together, and a second main body mounted to the first main body. The second main body includes a first circuit section and a second circuit section that are each constituted by using at least one acoustic wave element and are electrically separated from each other. The first main body includes first to third ground conductor lavers located between the first and second circuit sections when seen in a Z direction.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 13, 2023
    Applicant: TDK CORPORATION
    Inventor: Kazuhiro TSUKAMOTO
  • Publication number: 20230074751
    Abstract: An LC circuit includes a first capacitor provided between a first connection point and a second connection point, a second capacitor provided between the second connection point and a third connection point, a third capacitor provided between the third connection point and a fourth connection point, a fourth capacitor provided between the first connection point and the third connection point, a fifth capacitor provided between the second connection point and the fourth connection point, a first inductor connected to the second connection point, and a second inductor connected to the third connection point.
    Type: Application
    Filed: August 26, 2022
    Publication date: March 9, 2023
    Applicant: TDK CORPORATION
    Inventor: Kazuhiro TSUKAMOTO
  • Publication number: 20220294407
    Abstract: A filter device includes a filter including at least one inductor and at least one capacitor, and a stack of a plurality of dielectric layers and a plurality of conductor layers. The plurality of dielectric layers include at least one first dielectric layer formed of a first dielectric material and at least one second dielectric layer formed of a second dielectric material. The plurality of conductor layers include at least one first conductor layer in contact with the at least one first dielectric layer, and at least one second conductor layer in contact with the at least one second dielectric layer. The temperature coefficient of resonant frequency of the first dielectric material has a positive value. The temperature coefficient of resonant frequency of the second dielectric material has a negative value.
    Type: Application
    Filed: March 3, 2022
    Publication date: September 15, 2022
    Applicant: TDK CORPORATION
    Inventors: Takuya SATO, Kazuhiro TSUKAMOTO
  • Publication number: 20220294411
    Abstract: A branching filter includes a common port, a first signal port, a second signal port, a first filter, which is provided between the common port and the first signal port, that selectively passes a signal of a frequency within a first passband, a second filter, which is provided between the common port and the second signal port, that selectively passes a signal of a frequency within a second passband different from the first passband, and a capacitor that has a first end and a second end and connects the first filter and the second filter.
    Type: Application
    Filed: March 3, 2022
    Publication date: September 15, 2022
    Applicant: TDK CORPORATION
    Inventors: Takuya SATO, Kazuhiro TSUKAMOTO, Masanori TSUTSUMI
  • Patent number: 11356073
    Abstract: In a multilayer filter, a first LC parallel resonance unit, a second LC parallel resonance unit, and an LC circuit unit are configured in an element body, in which the LC circuit unit is connected between the first LC parallel resonance unit and the second LC parallel resonance unit in a path between a first terminal electrode and a second terminal electrode, a conductor pattern constituting an inductor of the LC circuit unit is not disposed between a conductor pattern constituting a first inductor of the first LC parallel resonance unit and a conductor pattern constituting a second inductor of the second LC parallel resonance unit in the element body, and the first inductor of the first LC parallel resonance unit and the second inductor of the second LC parallel resonance unit are magnetically coupled.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: June 7, 2022
    Assignee: TDK CORPORATION
    Inventors: Takuya Sato, Kazuhiro Tsukamoto
  • Publication number: 20210257984
    Abstract: In a multilayer filter, a first LC parallel resonance unit, a second LC parallel resonance unit, and an LC circuit unit are configured in an element body, in which the LC circuit unit is connected between the first LC parallel resonance unit and the second LC parallel resonance unit in a path between a first terminal electrode and a second terminal electrode, a conductor pattern constituting an inductor of the LC circuit unit is not disposed between a conductor pattern constituting a first inductor of the first LC parallel resonance unit and a conductor pattern constituting a second inductor of the second LC parallel resonance unit in the element body, and the first inductor of the first LC parallel resonance unit and the second inductor of the second LC parallel resonance unit are magnetically coupled.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 19, 2021
    Applicant: TDK CORPORATION
    Inventors: Takuya SATO, Kazuhiro TSUKAMOTO
  • Patent number: 10554195
    Abstract: A branching filter includes a first band-pass filter provided between a common port and a first signal port, and a second band-pass filter provided between the common port and a second signal port. The first band-pass filter includes a first LC resonant circuit and a first resonant circuit section. The first resonant circuit section includes a first acoustic wave resonator. The second band-pass filter includes a second LC resonant circuit and a second resonant circuit section. The second resonant circuit section includes a second acoustic wave resonator and an inductor connected in parallel.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 4, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Tsukamoto, Hiroya Suzuki