Patents by Inventor Kiyoshi Hatanaka

Kiyoshi Hatanaka 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: 9780559
    Abstract: The present invention relates to an electrostatic discharge protection device provided with an insulating laminate containing a first and a second insulating substrate stacked there, a first and a second discharge electrode disposed inside the insulating laminate, a first insulating layer having glass disposed on the side surfaces of the first and the second discharge electrodes, a second insulating layer having glass disposed on the main surfaces of the first and the second discharge electrodes, and an discharge inducing section disposed between the side surfaces of the first and the second discharge electrode, wherein, the distance between the side surfaces of the first and the second discharge electrodes was set as ?G and the thickness of the second insulating layer was set as ?Z which two adapt to inequations 3 ?m??Z?35 ?m and ?G?40 ?m.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: October 3, 2017
    Assignee: TDK CORPORATION
    Inventors: Shingo Suzuki, Kensaku Asakura, Takahiro Fujimori, Kiyoshi Hatanaka
  • Patent number: 9698464
    Abstract: A transmission line is provided with a line portion with a first relative permittivity which is composed of a first dielectric and a conductor filler dispersed in the first dielectric, and a surrounding dielectric portion composed of a second dielectric with a second relative permittivity, wherein, the surrounding dielectric portion exists around the line portion in a cross section perpendicular to a direction in which electromagnetic waves transmit in the line portion, the first relative permittivity is 600 or more, and the second relative permittivity is smaller than the first relative permittivity. An electronic component has the transmission line. Further, an electronic component is provided with a resonator having a resonant frequency ranging from 1 GHz to 10 GHz, wherein, the resonator is formed by using the transmission line.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: July 4, 2017
    Assignee: TDK CORPORATION
    Inventors: Takashi Fukui, Kiyoshi Hatanaka, Toshio Sakurai, Shigemitsu Tomaki
  • Patent number: 9647316
    Abstract: A transmission line and an electronic component including a resonator using the transmission line are provided. The transmission line is capable of transmitting electromagnetic waves of at least one frequency ranging from 1 GHz to 10 GHz and is composed of a first dielectric with a first relative permittivity and a surrounding dielectric portion composed of a second dielectric with a second relative permittivity, wherein, the first dielectric is represented by a formula of {XBaO.(1?X)SrO}TiO2 (0.25<X?0.55), and the second relative permittivity is smaller than the first relative permittivity.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: May 9, 2017
    Assignee: TDK CORPORATION
    Inventors: Toshio Sakurai, Kiyoshi Hatanaka, Takashi Fukui, Shigemitsu Tomaki
  • Patent number: 9601816
    Abstract: A dielectric line includes a line portion and a surrounding dielectric portion. The line portion is formed of a first dielectric having a first relative permittivity. The surrounding dielectric portion is formed of a second dielectric having a second relative permittivity. The line portion propagates one or more electromagnetic waves of one or more frequencies within the range of 1 to 10 GHz. In a cross section orthogonal to the direction of propagation of the one or more electromagnetic waves through the line portion, the surrounding dielectric portion is present around the line portion. The first relative permittivity is 1,000 or higher. The second relative permittivity is lower than the first relative permittivity.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 21, 2017
    Assignee: TDK CORPORATION
    Inventors: Shigemitsu Tomaki, Tomoaki Kawata, Kiyoshi Hatanaka, Toshio Sakurai, Yasunori Sakisaka
  • Publication number: 20160028227
    Abstract: The present invention relates to an electrostatic discharge protection device provided with an insulating laminate containing a first and a second insulating substrate stacked there, a first and a second discharge electrode disposed inside the insulating laminate, a first insulating layer having glass disposed on the side surfaces of the first and the second discharge electrodes, a second insulating layer having glass disposed on the main surfaces of the first and the second discharge electrodes, and an discharge inducing section disposed between the side surfaces of the first and the second discharge electrode, wherein, the distance between the side surfaces of the first and the second discharge electrodes was set as ?G and the thickness of the second insulating layer was set as ?Z which two adapt to inequations 3 ?m??Z?35 ?m and ?G?40 ?m.
    Type: Application
    Filed: March 6, 2014
    Publication date: January 28, 2016
    Inventors: Shingo SUZUKI, Kensaku ASAKURA, Takahiro FUJIMORI, Kiyoshi HATANAKA
  • Publication number: 20160013537
    Abstract: A transmission line and an electronic component including a resonator using the transmission line are provided. The transmission line is capable of transmitting electromagnetic waves of at least one frequency ranging from 1 GHz to 10 GHz and is composed of a first dielectric with a first relative permittivity and a surrounding dielectric portion composed of a second dielectric with a second relative permittivity, wherein, the first dielectric is represented by a formula of {XBa·(1-X)SrO}TiO2 (0.25<X?0.55), and the second relative permittivity is smaller than the first relative permittivity.
    Type: Application
    Filed: July 1, 2015
    Publication date: January 14, 2016
    Inventors: Toshio SAKURAI, Kiyoshi HATANAKA, Takashi FUKUI, Shigemitsu TOMAKI
  • Publication number: 20160013535
    Abstract: A transmission line is provided with a line portion with a first relative permittivity which is composed of a first dielectric and a conductor filler dispersed in the first dielectric, and a surrounding dielectric portion composed of a second dielectric with a second relative permittivity, wherein, the surrounding dielectric portion exists around the line portion in a cross section perpendicular to a direction in which electromagnetic waves transmit in the line portion, the first relative permittivity is 600 or more, and the second relative permittivity is smaller than the first relative permittivity. An electronic component has the transmission line. Further, an electronic component is provided with a resonator having a resonant frequency ranging from 1 GHz to 10 GHz, wherein, the resonator is formed by using the transmission line.
    Type: Application
    Filed: July 1, 2015
    Publication date: January 14, 2016
    Inventors: Takashi FUKUI, Kiyoshi HATANAKA, Toshio SAKURAI, Shigemitsu TOMAKI
  • Publication number: 20150035626
    Abstract: A dielectric line includes a line portion and a surrounding dielectric portion. The line portion is formed of a first dielectric having a first relative permittivity. The surrounding dielectric portion is formed of a second dielectric having a second relative permittivity. The line portion propagates one or more electromagnetic waves of one or more frequencies within the range of 1 to 10 GHz. In a cross section orthogonal to the direction of propagation of the one or more electromagnetic waves through the line portion, the surrounding dielectric portion is present around the line portion. The first relative permittivity is 1,000 or higher. The second relative permittivity is lower than the first relative permittivity.
    Type: Application
    Filed: July 25, 2014
    Publication date: February 5, 2015
    Inventors: Shigemitsu TOMAKI, Tomoaki KAWATA, Kiyoshi HATANAKA, Toshio SAKURAI, Yasunori SAKISAKA
  • Patent number: 8846210
    Abstract: A ceramic electronic component includes a first dielectric layer, a second dielectric layer, and a boundary reaction layer. The first dielectric layer is a layer containing BaO, Nd2O3, and TiO2, the second dielectric layer is a layer containing a material different from the material of the first dielectric layer, and the boundary reaction layer is a layer formed between the first dielectric layer and the second dielectric layer and containing at least one of Zn, Ti, Cu, and Mg.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: September 30, 2014
    Assignee: TDK Corporation
    Inventors: Toshio Sakurai, Hisashi Kobuke, Tomohiro Arashi, Kiyoshi Hatanaka, Yasuharu Miyauchi
  • Patent number: 8841226
    Abstract: A dielectric ceramic composition includes a component represented by composition formula {?(xBaO.yNd2O3.zTiO2)+?(2MgO.SO2)} as a main component and zinc oxide, boron oxide, and a glass having a softening point equal to or lower than a certain temperature as minor components with respect to the main component. In the dielectric ceramic composition, x, y, and z that respectively represent molar ratios of BaO, Nd2O3, and TiO2 are in certain ranges and ? and ? that represent volume ratios of subcomponents (xBaO.yNd2O3.zTiO2 and 2MgO.SiO2) in the main component are in certain ranges. When the minor components are respectively represented by aZnO, bB2O3, and cglass, a, b, and c that represent mass ratios of the respective minor components to the main component are in certain ranges.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 23, 2014
    Assignee: TDK Corporation
    Inventors: Raitarou Masaoka, Toshio Sakurai, Tomohiro Arashi, Kyung-Ku Choi, Kiyoshi Hatanaka
  • Publication number: 20110223431
    Abstract: A ceramic electronic component includes a first dielectric layer, a second dielectric layer, and a boundary reaction layer. The first dielectric layer is a layer containing BaO, Nd2O3, and TiO2, the second dielectric layer is a layer containing a material different from the material of the first dielectric layer, and the boundary reaction layer is a layer formed between the first dielectric layer and the second dielectric layer and containing at least one of Zn, Ti, Cu, and Mg.
    Type: Application
    Filed: February 4, 2011
    Publication date: September 15, 2011
    Applicant: TDK CORPORATION
    Inventors: Toshio SAKURAI, Hisashi KOBUKE, Tomohiro ARASHI, Kiyoshi HATANAKA, Yasuharu MIYAUCHI
  • Patent number: 7973615
    Abstract: The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide in which a half-wavelength TE mode resonator is formed; an E plane coupling window formed in a wall portion orthogonal to an H plane out of wall portions constructing the TE mode resonator in the waveguide; an output line provided at the edge on the side of the wall portion parallel with the H plane on the E plane coupling window, and magnetically coupled to electromagnetic waves in the TE mode resonator; and another output line provided at the edge on the side of the wall portion parallel with the H plane in the E plane coupling window, and magnetically coupled to the electromagnetic waves.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: July 5, 2011
    Assignee: TDK Corporation
    Inventors: Tatsuya Fukunaga, Masaaki Ikeda, Kiyoshi Hatanaka
  • Publication number: 20100244995
    Abstract: The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide (3) in which a half-wavelength TE mode resonator (2) is formed; an E plane coupling window (4) formed in a wall portion (3a) orthogonal to an H plane out of wall portions (3a) to (3e) constructing the TE mode resonator (2) in the waveguide (3); an output line (5a) provided at the edge on the side of the wall portion (3d) parallel with the H plane on the E plane coupling window (4), and magnetically coupled to electromagnetic waves in the TE mode resonator (2); and another output line (5b) provided at the edge on the side of the wall portion (3e) parallel with the H plane in the E plane coupling window (4), and magnetically coupled to the electromagnetic waves.
    Type: Application
    Filed: May 27, 2010
    Publication date: September 30, 2010
    Applicant: TDK CORPORATION
    Inventors: Tatsuya Fukunaga, Masaaki Ikeda, Kiyoshi Hatanaka
  • Publication number: 20100244987
    Abstract: Provided is a ceramic electronic component that, even if it is formed by building up dielectric layers of different compositions, can ensure that the built-up dielectric layers are prevented from separating from each other. The ceramic electronic component according to the present invention has: a first dielectric layer containing, as major components thereof, BaO, Nd2O3 and TiO2; a second dielectric layer containing a different composition from the first dielectric layer; and a boundary layer containing Zn and Ti, which is formed between the first dielectric layer and the second dielectric layer.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 30, 2010
    Applicant: TDK CORPORATION
    Inventors: Toshio Sakurai, Tomohiro Arashi, Hisashi Kobuke, Kiyoshi Hatanaka
  • Patent number: 7750760
    Abstract: The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide (3) in which a half-wavelength TE mode resonator (2) is formed; an E plane coupling window (4) formed in a wall portion (3a) orthogonal to an H plane out of wall portions (3a) to (3e) constructing the TE mode resonator (2) in the waveguide (3); an output line (5a) provided at the edge on the side of the wall portion (3d) parallel with the H plane on the E plane coupling window (4), and magnetically coupled to electromagnetic waves in the TE mode resonator (2); and another output line (5b) provided at the edge on the side of the wall portion (3e) parallel with the H plane in the E plane coupling window (4), and magnetically coupled to the electromagnetic waves.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: July 6, 2010
    Assignee: TDK Corporation
    Inventors: Tatsuya Fukunaga, Masaaki Ikeda, Kiyoshi Hatanaka
  • Patent number: 7733663
    Abstract: A multilayer ceramic substrate includes a plurality of ceramic layers laminated each other. The plurality of ceramic layers form a bulge and a cavity having such a shape that an opening area of the cavity gradually becomes smaller toward a bottom of the cavity.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: June 8, 2010
    Assignee: TDK Corporation
    Inventors: Kenji Endou, Kiyoshi Hatanaka, Masaharu Hirakawa, Haruo Nishino, Hideaki Fujioka
  • Patent number: 7662477
    Abstract: A highly reliable ceramics substrate which can sufficiently secure a bonding strength of a surface conductor in an initial state and after a lapse of time (e.g., after a PCT) is provided. The multilayer ceramics substrate has a surface conductor on at least one surface of a multilayer body constituted by a plurality of laminated ceramics substrate layers. A reaction phase formed by a reaction between a ceramics component in the ceramics substrate layers and a glass component in the surface conductor is deposited at an interface between the surface conductor and ceramics substrate layers. For example, an alumina filler in the ceramics substrate layers and Zn in the surface conductor react with each other, thereby forming ZnAl2O4 as the reaction phase.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: February 16, 2010
    Assignee: TDK Corporation
    Inventors: Yasuharu Miyauchi, Toshiyuki Suzuki, Masaharu Hirakawa, Tomoko Nakamura, Toshinobu Miyakoshi, Kiyoshi Hatanaka
  • Patent number: 7578058
    Abstract: A multilayer ceramic substrate having a cavity is formed by the steps of laminating a plurality of ceramic green sheets including ceramic green sheets having through holes corresponding to the cavity to form a multilayer body, pressing the multilayer body and firing the pressed body. At this time, a shrinkage suppression green sheet is laminated on the surface of the a ceramic green sheet constituting the outermost layer of the multilayer body, and a shrinkage suppression green sheet piece is disposed on the ceramic green sheet exposed to the bottom of the cavity in accordance with the shape of the cavity. A burnable sheet is further disposed on the shrinkage suppression green sheet piece. Before the pressing step, an embedded green sheet separate from the ceramic green sheets (portion separated by inserting a cut) is disposed on the shrinkage suppression green sheet piece or the burnable sheet so that it is filled in the cavity. After the firing step, the embedded green sheet fired is removed.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: August 25, 2009
    Assignee: TDK Corporation
    Inventors: Kenji Endou, Kiyoshi Hatanaka, Masaharu Hirakawa, Haruo Nishino, Hideaki Fujioka
  • Publication number: 20090021324
    Abstract: The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the balanced electromagnetic waves while easily realizing miniaturization. The RF module includes: a waveguide (3) in which a half-wavelength TE mode resonator (2) is formed; an E plane coupling window (4) formed in a wall portion (3a) orthogonal to an H plane out of wall portions (3a) to (3e) constructing the TE mode resonator (2) in the waveguide (3); an output line (5a) provided at the edge on the side of the wall portion (3d) parallel with the H plane on the E plane coupling window (4), and magnetically coupled to electromagnetic waves in the TE mode resonator (2); and another output line (5b) provided at the edge on the side of the wall portion (3e) parallel with the H plane in the E plane coupling window (4), and magnetically coupled to the electromagnetic waves.
    Type: Application
    Filed: September 15, 2008
    Publication date: January 22, 2009
    Applicant: TDK CORPORATION
    Inventors: Tatsuya Fukunaga, Masaaki Ikeda, Kiyoshi Hatanaka
  • Publication number: 20080283281
    Abstract: A multilayer ceramic substrate includes a plurality of ceramic layers laminated each other. The plurality of ceramic layers form a bulge and a cavity having such a shape that an opening area of the cavity gradually becomes smaller toward a bottom of the cavity.
    Type: Application
    Filed: April 29, 2008
    Publication date: November 20, 2008
    Applicant: TDK CORPORATION
    Inventors: Kenji Endou, Kiyoshi Hatanaka, Masaharu Hirakawa, Haruo Nishino, Hideaki Fujioka