Patents by Inventor Takaya Ishigaki

Takaya Ishigaki 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: 6729003
    Abstract: A process of producing a ceramic electronic component comprises external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes comprising a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: May 4, 2004
    Assignee: TDK Corporation
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Patent number: 6576497
    Abstract: A ceramic substrate having two side surfaces in a lengthwise direction and two side surfaces in a widthwise direction intersecting each other. The ceramic substrate also includes at least one flat surface in a thicknesswise direction. Internal electrode films are embedded in the ceramic substrate with film surfaces thereof extending roughly parallel to the flat surface of the ceramic substrate. External electrodes are each provided on the flat surface of the ceramic substrate toward one of the two ends of the ceramic substrate in the lengthwise direction, are electrically continuous with the internal electrode films and are formed over distances and from the two side surfaces in the widthwise direction.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: June 10, 2003
    Assignee: TDK Corporation
    Inventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
  • Patent number: 6523235
    Abstract: A method of manufacturing a ceramic capacitor relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: February 25, 2003
    Assignee: TDK Corporation
    Inventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
  • Patent number: 6407907
    Abstract: A multilayer capacitor having a hexagonally-shaped capacitor body, a first internal electrode arranged therein, and a second internal electrode arranged below the first internal electrode separated by a ceramic layer. The capacitor body is provided with a first through-hole electrode passing through the second non-contact hole, of the second internal electrode and electrically connected to the first internal electrode and a second through-hole electrode passing through the first non-contact hole of the first internal electrode and electrically connected to the second internal electrode in columnar shapes extending to intersect the internal electrodes. The first through-hole electrode is electrically connected to the first external electrodes arranged in island shapes at the upper and lower flat portions. The second through-hole electrode is electrically connected to the second external electrodes arranged in island shapes at the surfaces of the capacitor body.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: June 18, 2002
    Assignee: TDK Corporation
    Inventors: Taisuke Ahiko, Takaya Ishigaki
  • Publication number: 20020070442
    Abstract: A ceramic substrate (1) has two side surfaces (64, 65) in a lengthwise direction (X) and two side surfaces (66, 67) in a widthwise direction Y intersecting each other, and is also provided with at least one flat surface (68) in a thicknesswise direction (Z). Internal electrode films (2 to 11) are embedded in the ceramic substrate (1) with film surfaces thereof extending roughly parallel to the flat surface (68) of the ceramic substrate (1). External electrodes (44, 55) are each provided on the flat surface (68) of the ceramic substrate (1) toward one of the two ends of the ceramic substrate (1) in the lengthwise direction (X), are electrically continuous with the internal electrode films (2 to 11) and are formed over distances (d11, d12) and (d21, d22) from the two side surfaces (66, 67) in the widthwise direction (Y).
    Type: Application
    Filed: December 14, 2001
    Publication date: June 13, 2002
    Applicant: TDK Corporation
    Inventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
  • Patent number: 6381118
    Abstract: A ceramic electronic component comprising external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes having a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 30, 2002
    Assignee: TDK Corporation
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Patent number: 6380619
    Abstract: A ceramic substrate having two side surfaces in a lengthwise direction and two side surfaces in a widthwise direction intersecting each other. The ceramic substrate also includes at least one flat surface in a thicknesswise direction. Internal electrode films are embedded in the ceramic substrate with film surfaces thereof extending roughly parallel to the flat surface of the ceramic substrate. External electrodes are each provided on the flat surface of the ceramic substrate toward one of the two ends of the ceramic substrate in the lengthwise direction, are electrically continuous with the internal electrode films and are formed over distances and from the two side surfaces in the widthwise direction.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 30, 2002
    Assignee: TDK Corporation
    Inventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
  • Publication number: 20020046861
    Abstract: A ceramic electronic component comprising external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes comprising a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Application
    Filed: November 8, 2001
    Publication date: April 25, 2002
    Applicant: TDK CORPORATION
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Patent number: 6310759
    Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: October 30, 2001
    Assignee: TDK Corporation
    Inventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
  • Publication number: 20010019176
    Abstract: A ceramic substrate (1) has two side surfaces (64, 65) in a lengthwise direction (X) and two side surfaces (66, 67) in a widthwise direction Y intersecting each other, and is also provided with at least one flat surface (68) in a thicknesswise direction (Z). Internal electrode films (2 to 11) are embedded in the ceramic substrate (1) with film surfaces thereof extending roughly parallel to the flat surface (68) of the ceramic substrate (1). External electrodes (44, 55) are each provided on the flat surface (68) of the ceramic substrate (1) toward one of the two ends of the ceramic substrate (1) in the lengthwise direction (X), are electrically continuous with the internal electrode films (2 to 11) and are formed over distances (d11, d12) and (d21, d22) from the two side surfaces (66, 67) in the widthwise direction (Y).
    Type: Application
    Filed: March 31, 1999
    Publication date: September 6, 2001
    Inventors: TAISUKE AHIKO, TAKAYA ISHIGAKI, HIROKI SATO, KAMIYA TAKASHI, MASANORI YAMAMOTO
  • Publication number: 20010001258
    Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 17, 2001
    Applicant: TDK Corporation
    Inventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
  • Patent number: 6191933
    Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: February 20, 2001
    Assignee: TDK Corporation
    Inventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
  • Patent number: 5935365
    Abstract: An unbaked ceramic layer is formed by applying a ceramic paste on to an organic flexible supporting body. First target marks are formed on the flexible supporting body before or after this process. Then, the positioning for printing electrodes is performed based upon information obtained through image processing of the first target marks, to print the electrodes on the unbaked ceramic layer. With this, a manufacturing method for ceramic electronic components that can minimize positional misalignment in electrode patterns is provided.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 10, 1999
    Assignee: TDK Corporation
    Inventors: Ryo Kobayashi, Takaya Ishigaki, Hiroshi Yagi, Shigehiko Shirai, Eizou Tsunoda, Kaoru Kawasaki, Ryuji Hosogaya, Yasunori Chiba, Yoshimi Yodokawa, Minoru Kanzaki, Masatoshi Ito, Takashi Abe, Yasushi Izumibe
  • Patent number: 5805409
    Abstract: A multi-layer electronic part, such as a multi-layer ceramic capacitor, which comprises internal electrodes stacked alternately with layers of a dielectric material containing at least 50 wt % of lead in terms of PbO and external electrodes connected to the internal electrodes, the external electrodes each comprising a baked electrode layer connected to the internal electrodes; a plating layer having solderability; and a metal particle-containing electrode layer comprising a thermosetting resin and metal particles, between the baked electrode layer and the plating layer, the metal particle-containing electrode layer having a thickness of from 5 to 200 .mu.m, the metal particle-containing electrode layer being disposed between the baked electrode layer and the plating layer.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: September 8, 1998
    Assignee: TDK Corporation
    Inventors: Wataru Takahara, Takaya Ishigaki, Makoto Morita
  • Patent number: 5716481
    Abstract: According to the present invention, ceramic electronic components are produced by a process which includes the steps of forming an unbaked ceramic layer on a surface of an organic flexible supporting body by applying a ceramic paste, the surface having an area that is given a peeling treatment and areas that are not given the peeling treatment; forming first target marks on the flexible supporting body; and positioning and priming electrodes on the unbaked ceramic layer, based upon information obtained through image processing of the first target marks.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: February 10, 1998
    Assignee: TDK Corporation
    Inventors: Ryo Kobayashi, Takaya Ishigaki, Hiroshi Yagi, Shigehiko Shirai, Eizou Tsunoda, Kaoru Kawasaki, Ryuji Hosogaya, Yasunori Chiba, Yoshimi Yodokawa, Minoru Kanzaki, Masatoshi Ito, Takashi Abe, Yasushi Izumibe
  • Patent number: 5590016
    Abstract: The invention decreases crosstalk due to capacitive coupling between through type capacitor elements in a multilayer through type capacitor array. On dielectric sheets between electrodes, which constitute a multi capacitor array, through-holes filled with conductive materials are formed, where a central conductor is not present. By electrically connecting conductive materials filled in the through-holes, electrostatic shielding is provided between the through type capacitor elements. Electrical connection is achieved through conductive layers formed outside or inside the through type capacitor elements.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: December 31, 1996
    Assignee: TDK Corporation
    Inventors: Yoshikazu Fujishiro, Takaya Ishigaki, Hiraku Harada