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).
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Patent number: 6729003Abstract: 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: GrantFiled: November 8, 2001Date of Patent: May 4, 2004Assignee: TDK CorporationInventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
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Patent number: 6576497Abstract: 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: GrantFiled: December 14, 2001Date of Patent: June 10, 2003Assignee: TDK CorporationInventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
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Patent number: 6523235Abstract: 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: GrantFiled: October 27, 2000Date of Patent: February 25, 2003Assignee: TDK CorporationInventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
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Patent number: 6407907Abstract: 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: GrantFiled: July 6, 2000Date of Patent: June 18, 2002Assignee: TDK CorporationInventors: Taisuke Ahiko, Takaya Ishigaki
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Publication number: 20020070442Abstract: 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: ApplicationFiled: December 14, 2001Publication date: June 13, 2002Applicant: TDK CorporationInventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
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Patent number: 6381118Abstract: 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: GrantFiled: July 18, 2000Date of Patent: April 30, 2002Assignee: TDK CorporationInventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
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Patent number: 6380619Abstract: 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: GrantFiled: March 31, 1999Date of Patent: April 30, 2002Assignee: TDK CorporationInventors: Taisuke Ahiko, Takaya Ishigaki, Hiroki Sato, Kamiya Takashi, Masanori Yamamoto
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Publication number: 20020046861Abstract: 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: ApplicationFiled: November 8, 2001Publication date: April 25, 2002Applicant: TDK CORPORATIONInventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
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Patent number: 6310759Abstract: 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: GrantFiled: December 21, 2000Date of Patent: October 30, 2001Assignee: TDK CorporationInventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
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Publication number: 20010019176Abstract: 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: ApplicationFiled: March 31, 1999Publication date: September 6, 2001Inventors: TAISUKE AHIKO, TAKAYA ISHIGAKI, HIROKI SATO, KAMIYA TAKASHI, MASANORI YAMAMOTO
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Publication number: 20010001258Abstract: 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: ApplicationFiled: December 21, 2000Publication date: May 17, 2001Applicant: TDK CorporationInventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
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Patent number: 6191933Abstract: 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: GrantFiled: January 5, 1999Date of Patent: February 20, 2001Assignee: TDK CorporationInventors: Takaya Ishigaki, Masatoshi Ishikawa, Takashi Kamiya, Shunji Itakura, Yuji Aiba, Masanori Yamamoto
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Patent number: 5935365Abstract: 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: GrantFiled: October 28, 1997Date of Patent: August 10, 1999Assignee: TDK CorporationInventors: 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
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Patent number: 5805409Abstract: 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: GrantFiled: August 14, 1996Date of Patent: September 8, 1998Assignee: TDK CorporationInventors: Wataru Takahara, Takaya Ishigaki, Makoto Morita
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Patent number: 5716481Abstract: 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: GrantFiled: October 27, 1995Date of Patent: February 10, 1998Assignee: TDK CorporationInventors: 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
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Patent number: 5590016Abstract: 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: GrantFiled: December 14, 1994Date of Patent: December 31, 1996Assignee: TDK CorporationInventors: Yoshikazu Fujishiro, Takaya Ishigaki, Hiraku Harada