Patents by Inventor Akihiro Takeda
Akihiro Takeda 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: 11189777Abstract: A multilayer piezoelectric element includes a piezoelectric element body, a first internal electrode and a second internal electrode, a plurality of first connecting conductors, a plurality of second connecting conductors, and an external member. The piezoelectric element body is formed by laminating a plurality of piezoelectric element body layer. The piezoelectric element body includes a first main surface and a second main surface, and a side surface. The plurality of first connecting conductors are connected to the first internal electrode. The plurality of second connecting conductors are connected to the second internal electrode. The external member is conductive and is bonded to the first main surface in such a way as to cover the first end portions of the plurality of first connecting conductors. The external member is electrically connected to the plurality of first connecting conductors.Type: GrantFiled: September 12, 2018Date of Patent: November 30, 2021Assignee: TDK CORPORATIONInventors: Yoshiki Ohta, Tetsuyuki Taniguchi, Hideya Sakamoto, Kazushi Tachimoto, Junpei Kikuchi, Akihiro Takeda
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Publication number: 20210255739Abstract: In an input device capable of reliably detecting, when an operator brings an operating body close to or into contact with an operation plane, absolute position information irrespective of a contact area size, third electrode arrays are disposed closer to the operation plane relative to second electrode arrays in a normal direction of the operation plane, the second electrode arrays have a portion protruding from the corresponding third electrode arrays when viewed in the normal direction, and assuming that a change amount of electrostatic capacitance between first and third electrode arrays occurred by an operation of the operating body is denoted by ?C1 and a change amount of electrostatic capacitance between the first and second electrode arrays occurred by an operation of the operating body is denoted by ?C2, a position of the operating body in the normal direction is calculated based on a ratio ?C1/?C2.Type: ApplicationFiled: May 5, 2021Publication date: August 19, 2021Inventors: Junji HASHIDA, Toru TAKAHASHI, Toru SAWADA, Yoshifumi MASUMOTO, Shinichi HIGUCHI, Koji TSUKAMOTO, Tomoyuki YAMAI, Akihiro TAKEDA, Sadakazu SHIGA
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Publication number: 20210241737Abstract: Provided is a musical instrument controller capable of accurately controlling a musical sound parameter. This musical instrument controller includes: a reception means for receiving, from a musical performance device, a sound emission start signal transmitted on the basis of a musical performance operation; a sensor for detecting an amount of displacement from a reference position; and a control means for generating a control signal on the basis of the amount of displacement from the reference position and transmitting the control signal to a sound generation device. The control means sets the reference position on the basis of the sound emission start signal received from the musical performance device.Type: ApplicationFiled: July 5, 2018Publication date: August 5, 2021Applicant: Roland CorporationInventors: Jun-ichi MIKI, Akihiro TAKEDA, Hiroyuki YOKOYAMA
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Publication number: 20210148837Abstract: The X-ray inspection apparatus includes an X-ray source, a sample moving mechanism, an X-ray detector equipped with a line sensor with pixels detecting X-ray radiation passing through a sample, an image storage unit for storing X-ray radiation intensities, an intensity correction unit for correcting the X-ray radiation intensities stored in the image storage unit, and a defect detector for detecting a defect in the sample. The intensity correction unit sets an intensity of X-rays detected from the inspection initiation region after starting inspection of the sample or an intensity of X-rays preliminarily detected from the sample before starting the inspection as a reference radiation intensity, and corrects an intensity of X-rays detected from the subsequent inspection region based on a correction coefficient obtained from comparison between the intensity of X-rays detected from the subsequent inspection region and the reference radiation intensity.Type: ApplicationFiled: August 21, 2020Publication date: May 20, 2021Inventor: Akihiro TAKEDA
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Publication number: 20200406297Abstract: A vibration device includes a bimorph type piezoelectric element having a first main surface and a second main surface facing each other and a vibration member bonded to the second main surface of the piezoelectric element. The piezoelectric element has a first active region disposed closer to the first main surface between the first and second main surfaces and a second active region disposed closer to the second main surface than the first active region between the first and second main surfaces. When a force generated in the first active region is F1, a force generated in the second active region is F2, and a force by which the vibration member restrains the second active region is Fr, F2?F1?Fr is satisfied.Type: ApplicationFiled: February 21, 2019Publication date: December 31, 2020Applicant: TDK CORPORATIONInventors: Yoshiki OHTA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Yoshikazu SHIMURA, Tetsuyuki TANIGUCHI, Akihiro TAKEDA
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Patent number: 10823686Abstract: Detection can be performed even for a thick inspection target object through time delay integration without degradation of spatial resolution. There is provided an X-ray inspection device configured to include: an X-ray source that generates X-rays; a transport unit that performs transporting a sample; a detecting unit that has a time delay integration type detector which detects X-rays generated by the X-ray source and transmitted through the sample transported by the transport unit; and a defect determining unit that processes a signal obtained by detecting the X-rays transmitted through the sample by the time delay integration type detector of the detecting unit and determines a defect in the sample. The transport unit performs transporting the sample while causing the sample to rotate in synchronization with the transporting when the sample passes in front of the time delay integration type detector of the detecting unit.Type: GrantFiled: May 13, 2016Date of Patent: November 3, 2020Assignee: HITACHI HIGH-TECH SCIENCE CORPORATIONInventors: Yuta Urano, Kaifeng Zhang, Yoshiki Matoba, Akihiro Takeda
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Publication number: 20200321513Abstract: In a piezoelectric element, shift of a resonance point to a low-pitched sound side is achieved. A resonance point of a piezoelectric element moves to a low-pitched sound side when an active region is configured to be surrounded by an inactive region as in the configuration of the piezoelectric element. According to the piezoelectric element whose resonance point is moved to a low-pitched sound side, the piezoelectric element can realize a sound pressure that is sufficiently high for practical use when it is applied to an acoustic device.Type: ApplicationFiled: December 12, 2018Publication date: October 8, 2020Applicant: TDK CORPORATIONInventors: Yoshikazu SHIMURA, Kaoru KIJIMA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Ryuhei SASAKI, Yoshiki OHTA, Akihiro TAKEDA
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Publication number: 20200282426Abstract: A piezoelectric element includes a piezoelectric element body including a first principal surface and a second principal surface opposing each other, and a plurality of external electrodes disposed on the first principal surface. A vibration member includes a third principal surface opposing the second principal surface. The piezoelectric element is joined to the third principal surface. A wiring member is electrically connected to the piezoelectric element. The wiring member includes a region located on the plurality of external electrodes and joined to the plurality of external electrodes. The region of the wiring member monolithically covers the plurality of external electrodes when viewed from a direction orthogonal to the first principal surface.Type: ApplicationFiled: October 25, 2018Publication date: September 10, 2020Applicant: TDK CORPORATIONInventors: Yoshiki OHTA, Kazushi TACHIMOTO, Hideya SAKAMOTO, Tetsuyuki TANIGUCHI, Tatsuya TAKI, Tomohiro TAKEDA, Akihiro TAKEDA
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Patent number: 10770641Abstract: A piezoelectric element includes first and second electrodes, a first piezoelectric body layer, and a plurality of first through-hole conductors. The first and second electrodes oppose each other. The first piezoelectric body layer is disposed between the first electrode and the second electrode. The plurality of first through-hole conductors penetrates the first piezoelectric body layer and is connected to the first electrode and the second electrode. When seen in an opposing direction of the first and second electrodes, the plurality of first through-hole conductors is arrayed in a matrix.Type: GrantFiled: September 29, 2017Date of Patent: September 8, 2020Assignee: TDK CORPORATIONInventors: Yoshiki Ohta, Hideya Sakamoto, Kazushi Tachimoto, Nobuo Furukawa, Akihiro Takeda
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Patent number: 10761663Abstract: An input device includes a translucent base material having flexibility, translucent first electrode parts arranged in a sensing region on the base material in a first direction, translucent second electrode parts arranged in the sensing region on the base material in a second direction crossing the first direction, and lead wires that are electrically continuous to the first electrode parts and second electrode parts, the lead wires extending from the sensing region on the base material to a peripheral region allocated outside the sensing region. A bent portion is provided in the peripheral region on the base material. Each lead wire has a flexible conductive member on the bent portion. A covering material is provided so as cover at least part of the flexible conductive member on the base material.Type: GrantFiled: October 9, 2018Date of Patent: September 1, 2020Assignee: Alps Alpine Co., Ltd.Inventors: Suguru Wada, Toru Sawada, Junji Hashida, Yoshifumi Masumoto, Takenobu Horino, Atsushi Matsuda, Akihiro Takeda, Koji Tsukamoto, Toru Takahashi, Minoru Sato
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Publication number: 20200212285Abstract: A piezoelectric element includes a piezoelectric body layer, a first electrode, a second electrode, a third electrode, and a conductor. The piezoelectric body layer has rectangular first and second principal surfaces opposing each other, and includes a piezoelectric material. The first electrode is provided on the first principal surface. The second electrode is provided on the first principal surface in such a way that the second electrode is separated from the first electrode. The third electrode is provided on the second principal surface in such a way that the third electrode opposes the first electrode. The conductor is connected to the second electrode and the third electrode. The first electrode has a round corner being rounder than a corner part of the piezoelectric body layer when seen in an opposing direction of the first and second principal surfaces.Type: ApplicationFiled: March 11, 2020Publication date: July 2, 2020Applicant: TDK CORPORATIONInventors: Yoshiki OHTA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Nobuo FURUKAWA, Akihiro TAKEDA
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Patent number: 10644220Abstract: A piezoelectric element includes a piezoelectric body layer, a first electrode, a second electrode, a third electrode, and a first through-hole conductor. The piezoelectric body layer has rectangular first and second principal surfaces opposing each other, and includes a piezoelectric material. The first electrode is provided on the first principal surface. The second electrode is provided on the first principal surface in such a way that the second electrode is separated from the first electrode. The third electrode is provided on the second principal surface in such a way that the third electrode opposes the first electrode. The through-hole conductor penetrates the piezoelectric body layer and is connected to the second electrode and the third electrode. The first electrode has a round corner when seen in an opposing direction of the first and second principal surfaces.Type: GrantFiled: September 14, 2017Date of Patent: May 5, 2020Assignee: TDK CORPORATIONInventors: Yoshiki Ohta, Hideya Sakamoto, Kazushi Tachimoto, Nobou Furukawa, Akihiro Takeda
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Publication number: 20190312190Abstract: A piezoelectric element includes a piezoelectric body, an electrode layer, and a reinforcing layer. The piezoelectric body has a first main surface, a second main surface, and a side surface. The first main surface and the second main surface oppose each other. The side surface extends in an opposing direction in which the first main surface and the second main surface oppose each other in such a way as to connect the first main surface and the second main surface. The electrode layer is provided in the piezoelectric body. The reinforcing layer is provided on the first main surface. The electrode layer is provided opposing the first main surface and apart from the side surface. When viewed from the opposing direction, the electrode layer has a corner. When viewed from the opposing direction, the reinforcing layer overlaps the corner.Type: ApplicationFiled: April 3, 2019Publication date: October 10, 2019Applicant: TDK CORPORATIONInventors: Yoshiki OHTA, Hideya SAKAMOTO, Kazushi TACHIMOTO, Yoshikazu SHIMURA, Tetsuyuki TANIGUCHI, Akihiro TAKEDA
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Patent number: 10439126Abstract: A piezoelectric actuator includes a piezoelectric element, a connection member of a shaft or weight connected to an element end surface of the piezoelectric element, the other one of the shaft and weight connected to a first end surface constituting an end surface opposing to the element end surface of the piezoelectric element, a wiring portion, and a resin portion. The piezoelectric element forms external electrodes on surfaces thereof, alternately laminates internal electrode layers with piezoelectric layers therebetween, and provides part of the external electrodes on the element end surface. The wiring portion has conductive portions corresponding to the external electrodes. The resin portion fixes the piezoelectric element, the connection member, and the wiring portion so that the element end surface opposes to the connection member with the wiring portion therebetween and that the conductive portions are electrically connected to the external electrodes.Type: GrantFiled: January 27, 2017Date of Patent: October 8, 2019Assignee: TDK CORPORATIONInventors: Satoshi Ozawa, Koji Taniwaki, Toshiki Maruyama, Akihiro Takeda
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Publication number: 20190088851Abstract: A multilayer piezoelectric element includes a piezoelectric element body, a first internal electrode and a second internal electrode, a plurality of first connecting conductors, a plurality of second connecting conductors, and an external member. The piezoelectric element body is formed by laminating a plurality of piezoelectric element body layer. The piezoelectric element body includes a first main surface and a second main surface, and a side surface. The plurality of first connecting conductors are connected to the first internal electrode. The plurality of second connecting conductors are connected to the second internal electrode. The external member is conductive and is bonded to the first main surface in such a way as to cover the first end portions of the plurality of first connecting conductors. The external member is electrically connected to the plurality of first connecting conductors.Type: ApplicationFiled: September 12, 2018Publication date: March 21, 2019Applicant: TDK CORPORATIONInventors: Yoshiki OHTA, Tetsuyuki TANIGUCHI, Hideya SAKAMOTO, Kazushi TACHIMOTO, Junpei KIKUCHI, Akihiro TAKEDA
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Publication number: 20190050083Abstract: An input device includes a translucent base material having flexibility, translucent first electrode parts arranged in a sensing region on the base material in a first direction, translucent second electrode parts arranged in the sensing region on the base material in a second direction crossing the first direction, and lead wires that are electrically continuous to the first electrode parts and second electrode parts, the lead wires extending from the sensing region on the base material to a peripheral region allocated outside the sensing region. A bent portion is provided in the peripheral region on the base material. Each lead wire has a flexible conductive member on the bent portion. A covering material is provided so as cover at least part of the flexible conductive member on the base material.Type: ApplicationFiled: October 9, 2018Publication date: February 14, 2019Inventors: Suguru WADA, Toru SAWADA, Junji HASHIDA, Yoshifumi MASUMOTO, Takenobu HORINO, Atsushi MATSUDA, Akihiro TAKEDA, Koji TSUKAMOTO, Toru TAKAHASHI, Minoru SATO
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Patent number: 10054555Abstract: Disclosed are an X-ray transmission inspection apparatus and an inspection method using the same that are capable of preventing over-detection and erroneous detection of foreign matter even when variations in vertical position of the sample occur. The X-ray transmission inspection apparatus includes: an X-ray source (2) irradiating a sample with X-rays; a sample moving device (3) moving the sample S continuously to a predetermined direction while X-rays X are emitted from the X-ray source; a time delay integration sensor (TDI sensor) (4) provided opposed to the X-ray source based on the sample, and detecting the X-rays transmitted through the sample; a distance sensor (5) measuring a distance between the X-ray source and the sample; and a TDI controller (6) controlling the TDI sensor by changing a charge transfer speed of the TDI sensor (4) in real time based on variations in the distance measured by the distance sensor.Type: GrantFiled: July 27, 2016Date of Patent: August 21, 2018Assignee: HITACHI HIGH-TECH SCIENCE CORPORATIONInventors: Yoshiki Matoba, Akihiro Takeda, Shingo Tsuboi, Toshihiro Sakai
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Publication number: 20180202947Abstract: Detection can be performed even for a thick inspection target object through time delay integration without degradation of spatial resolution. There is provided an X-ray inspection device configured to include: an X-ray source that generates X-rays; a transport unit that performs transporting a sample; a detecting unit that has a time delay integration type detector which detects X-rays generated by the X-ray source and transmitted through the sample transported by the transport unit; and a defect determining unit that processes a signal obtained by detecting the X-rays transmitted through the sample by the time delay integration type detector of the detecting unit and determines a defect in the sample. The transport unit performs transporting the sample while causing the sample to rotate in synchronization with the transporting when the sample passes in front of the time delay integration type detector of the detecting unit.Type: ApplicationFiled: May 13, 2016Publication date: July 19, 2018Inventors: Yuta URANO, Kaifeng ZHANG, Yoshiki MATOBA, Akihiro TAKEDA
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Patent number: D814427Type: GrantFiled: November 2, 2016Date of Patent: April 3, 2018Assignee: TDK CORPORATIONInventors: Satoshi Ozawa, Kohsuke Shimazaki, Haruo Taguchi, Akihiro Takeda
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Patent number: D933616Type: GrantFiled: May 3, 2018Date of Patent: October 19, 2021Assignee: TDK CORPORATIONInventors: Yoshiki Ohta, Yoshikazu Shimura, Ryuhei Sasaki, Kazushi Tachimoto, Hideya Sakamoto, Tetsuyuki Taniguchi, Akihiro Takeda