Patents by Inventor Hirobumi Tanaka
Hirobumi Tanaka 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: 11615919Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: GrantFiled: October 19, 2021Date of Patent: March 28, 2023Assignee: TDK CORPORATIONInventors: Hirobumi Tanaka, Toshio Sakurai, Keisuke Okai, Daisuke Iwanaga, Hisashi Nakata, Tomoya Shibasaki
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Patent number: 11476049Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. An upper-surface cover layer covering the upper surface of the element body located between the upper electrode parts has an external surface substantially flush with external surfaces of the upper electrode parts. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: GrantFiled: October 30, 2019Date of Patent: October 18, 2022Assignee: TDK CORPORATIONInventors: Toshio Sakurai, Hirobumi Tanaka, Keisuke Okai, Daisuke Iwanaga, Hisashi Nakata, Tomoya Shibasaki
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Patent number: 11295896Abstract: A multilayer ceramic electronic component includes an element body, a via-hole electrode, and a terminal electrode. The element body includes internal electrode layers and insulation layers alternately laminated in a lamination direction. The via-hole electrode penetrates from an upper surface of the element body thereinto and is connected with at least one of the internal electrode layers. The terminal electrode is formed on the upper surface of the element body and connected with the via-hole electrode. The via-hole electrode is embedded in a via hole formed on the element body so that a predetermined clearance space is formed in the via hole.Type: GrantFiled: October 28, 2019Date of Patent: April 5, 2022Assignee: TDK CORPORATIONInventors: Toshio Sakurai, Hirobumi Tanaka, Keisuke Okai, Daisuke Iwanaga, Hisashi Nakata, Tomoya Shibasaki
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Publication number: 20220044871Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: ApplicationFiled: October 19, 2021Publication date: February 10, 2022Applicant: TDK CORPORATIONInventors: Hirobumi TANAKA, Toshio SAKURAI, Keisuke OKAI, Daisuke IWANAGA, Hisashi NAKATA, Tomoya SHIBASAKI
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Patent number: 11195658Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: GrantFiled: October 30, 2019Date of Patent: December 7, 2021Assignee: TDK CORPORATIONInventors: Hirobumi Tanaka, Toshio Sakurai, Keisuke Okai, Daisuke Iwanaga, Hisashi Nakata, Tomoya Shibasaki
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Patent number: 11107632Abstract: A multilayer ceramic electronic component includes an element body and a terminal electrode. The element body includes internal electrode layers and insulation layers alternately laminated in a lamination direction. The terminal electrode is formed on an outer surface of the element body to be contacted and connected with the internal electrode layers. The terminal electrode includes an end-side electrode part and an upper-side electrode part. The end-side electrode part covers a leading end of the element body where the internal electrode layers are led. The upper-side electrode part is formed on a part of an upper surface of the element body and continues to the end-side electrode part. The terminal electrode is not substantially formed on a lower surface of the element body located on the other side of the upper surface along the lamination direction.Type: GrantFiled: July 24, 2019Date of Patent: August 31, 2021Assignee: TDK CORPORATIONInventors: Toshio Sakurai, Hirobumi Tanaka, Keisuke Okai, Daisuke Iwanaga, Hisashi Nakata, Tomoya Sihbasaki
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Publication number: 20200161051Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: ApplicationFiled: October 30, 2019Publication date: May 21, 2020Applicant: TDK CORPORATIONInventors: Hirobumi TANAKA, Toshio SAKURAI, Keisuke OKAI, Daisuke IWANAGA, Hisashi NAKATA, Tomoya SHIBASAKI
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Publication number: 20200152382Abstract: A multi-layer ceramic electronic device includes an element body and terminal electrodes. The terminal electrodes include end electrode parts covering ends of the element body in which internal electrode layers are led and upper electrode parts continuing to the end electrode parts and each partially covering an upper surface of the element body in a lamination direction. An upper-surface cover layer covering the upper surface of the element body located between the upper electrode parts has an external surface substantially flush with external surfaces of the upper electrode parts. The terminal electrodes are not substantially formed on a lower surface of the element body located opposite to the upper surface of the element body in the lamination direction.Type: ApplicationFiled: October 30, 2019Publication date: May 14, 2020Applicant: TDK CORPORATIONInventors: Toshio SAKURAI, Hirobumi TANAKA, Keisuke OKAI, Daisuke IWANAGA, Hisashi NAKATA, Tomoya SHIBASAKI
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Publication number: 20200135400Abstract: A multilayer ceramic electronic component includes an element body, a via-hole electrode, and a terminal electrode. The element body includes internal electrode layers and insulation layers alternately laminated in a lamination direction. The via-hole electrode penetrates from an upper surface of the element body thereinto and is connected with at least one of the internal electrode layers. The terminal electrode is formed on the upper surface of the element body and connected with the via-hole electrode. The via-hole electrode is embedded in a via hole formed on the element body so that a predetermined clearance space is formed in the via hole.Type: ApplicationFiled: October 28, 2019Publication date: April 30, 2020Applicant: TDK CORPORATIONInventors: Toshio SAKURAI, Hirobumi TANAKA, Keisuke OKAI, Daisuke IWANAGA, Hisashi NAKATA, Tomoya SHIBASAKI
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Publication number: 20200035417Abstract: A multilayer ceramic electronic component includes an element body and a terminal electrode. The element body includes internal electrode layers and insulation layers alternately laminated in a lamination direction. The terminal electrode is formed on an outer surface of the element body to be contacted and connected with the internal electrode layers. The terminal electrode includes an end-side electrode part and an upper-side electrode part. The end-side electrode part covers a leading end of the element body where the internal electrode layers are led. The upper-side electrode part is formed on a part of an upper surface of the element body and continues to the end-side electrode part. The terminal electrode is not substantially formed on a lower surface of the element body located on the other side of the upper surface along the lamination direction.Type: ApplicationFiled: July 24, 2019Publication date: January 30, 2020Applicant: TDK CORPORATIONInventors: Toshio SAKURAI, Hirobumi TANAKA, Keisuke OKAI, Daisuke IWANAGA, Hisashi NAKATA, Tomoya SIHBASAKI
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Patent number: 10446321Abstract: The present invention relates to a multilayer electronic component which includes an element body where a plurality of internal electrode layers and dielectric layers are alternately laminated. Insulating layers are disposed on a pair of side surfaces of the element body, facing each other. The insulating layers contain a glass composition and a ceramic composition.Type: GrantFiled: December 13, 2017Date of Patent: October 15, 2019Assignee: TDK CORPORATIONInventors: Yohei Noda, Hirobumi Tanaka
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Patent number: 10366837Abstract: The present invention relates to a multilayer electronic component which includes an element body where a plurality of internal electrode layers and dielectric layers are alternately laminated. Insulating layers are disposed on at least one side surface of the element body. The insulating layers contain a glass composition and a ceramic composition. The internal electrode layers contain a metal M and the ceramic composition contains an oxide of the metal M.Type: GrantFiled: December 13, 2017Date of Patent: July 30, 2019Assignee: TDK CORPORATIONInventors: Yohei Noda, Hirobumi Tanaka
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Publication number: 20180166219Abstract: The present invention relates to a multilayer electronic component which includes an element body where a plurality of internal electrode layers and dielectric layers are alternately laminated. Insulating layers are disposed on a pair of side surfaces of the element body, facing each other. The insulating layers contain a glass composition and a ceramic composition.Type: ApplicationFiled: December 13, 2017Publication date: June 14, 2018Applicant: TDK CORPORATIONInventors: Yohei NODA, Hirobumi TANAKA
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Publication number: 20180166218Abstract: The present invention relates to a multilayer electronic component which includes an element body where a plurality of internal electrode layers and dielectric layers are alternately laminated. Insulating layers are disposed on at least one side surface of the element body. The insulating layers contain a glass composition and a ceramic composition. The internal electrode layers contain a metal M and the ceramic composition contains an oxide of the metal M.Type: ApplicationFiled: December 13, 2017Publication date: June 14, 2018Applicant: TDK CORPORATIONInventors: Yohei Noda, Hirobumi Tanaka
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Patent number: 9997297Abstract: A multilayer electronic component includes an element body having internal electrode layers and dielectric layers. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces oppositely facing in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. End portions in the first axis direction of the internal electrode layers are recessed from end portions in the first axis direction of the dielectric layers to an inner side along the first axis direction. The retraction distances are varied at a predetermined range in each layer of the internal electrode layers.Type: GrantFiled: September 14, 2016Date of Patent: June 12, 2018Assignee: TDK CORPORATIONInventors: Keisuke Okai, Hirobumi Tanaka
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Patent number: 9991054Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces oppositely facing in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. An end portion in the first axis direction of the internal electrode layer is recessed from an end portion in the first axis direction of the dielectric layer to the inner side along the first axis direction. A main component of the internal electrode layer is Ni. A reaction portion is between the end portion in the first axis direction of the internal electrode layer and the insulating layer.Type: GrantFiled: September 14, 2016Date of Patent: June 5, 2018Assignee: TDK CORPORATIONInventors: Keisuke Okai, Hirobumi Tanaka, Yohei Noda
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Patent number: 9978521Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These layers are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. A pair of side surfaces facing each other in the first axis direction of the element body is respectively equipped with an insulating layer. A pair of end surfaces facing each other in the second axis direction of the element body is respectively equipped with an external electrode electrically connected to the internal electrode layer. The insulating layer has a mountain portion formed on a peripheral edge of the side surface and a plane portion of a central portion of the side surface.Type: GrantFiled: September 14, 2016Date of Patent: May 22, 2018Assignee: TDK CORPORATIONInventors: Keisuke Okai, Makoto Endo, Hiroshi Shindo, Yui Sugiura, Tomomichi Gunji, Yohei Noda, Hirobumi Tanaka
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Patent number: 9972440Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. An elastic modulus of the insulating layer is 12 GPa to 140 GPa.Type: GrantFiled: September 13, 2016Date of Patent: May 15, 2018Assignee: TDK CORPORATIONInventors: Keisuke Okai, Makoto Endo, Yohei Noda, Hirobumi Tanaka, Tomomichi Gunji, Yui Sugiura, Hiroshi Shindo
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Patent number: 9966191Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. The insulating layer includes a glass component. A formula (1) of 0.25<?/?<1 is satisfied, where ? denotes a thermal expansion coefficient of the insulating layer, and ? denotes a thermal expansion coefficient of one of the internal electrode layer and the dielectric layer that is larger than a thermal expansion coefficient of the other layer.Type: GrantFiled: September 14, 2016Date of Patent: May 8, 2018Assignee: TDK CORPORATIONInventors: Yohei Noda, Hirobumi Tanaka, Keisuke Okai
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Patent number: 9870866Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. The insulating layer integrally has an insulating layer extension portion covering part of the end surfaces facing each other in the second axis direction. W1/W0 is 1/30 to less than ?, where W0 denotes a width along the first axis, and W1 denotes a width along the first axis of the insulating layer extension portion. The external electrode covers at least part of the insulating layer extension portion.Type: GrantFiled: September 14, 2016Date of Patent: January 16, 2018Assignee: TDK CORPORATIONInventors: Yohei Noda, Hirobumi Tanaka, Hiroshi Shindo, Yui Sugiura, Tomomichi Gunji, Keisuke Okai