Patents Assigned to TDK Corporation
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Publication number: 20240105368Abstract: An R-T-B permanent magnet that contains: main-phase grains composed of an R2T14B compound (where R is a rare earth element, T is a transition metal element, and B is boron); and grain boundaries. R includes Ce. The grain boundaries include multi-grain grain boundaries that are adjacent to three or more main-phase grains. The multi-grain grain boundaries include an R-rich phase, and lamellar or acicular R-T precipitates are present in the R-rich phase.Type: ApplicationFiled: November 10, 2021Publication date: March 28, 2024Applicant: TDK CORPORATIONInventors: Atsushi KODA, Takahiro SUWA, Hikaru KUDO
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Publication number: 20240103277Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.Type: ApplicationFiled: September 26, 2023Publication date: March 28, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA, Tsuyoshi KOMAKI
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Publication number: 20240105388Abstract: A dielectric composition including a tungsten bronze type composite oxide as a main component represented by (Ba1-xSrx)aRbZrcTadO30+0.5e in terms of an atomic ratio. In the dielectric composition, c=(2a+3b?10)?e and d=(20?2a?3b)+e are satisfied. R includes at least one selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and Sc. In the dielectric composition, 0.000?x?0.500, 5.100?a?5.860, 0.000?b?0.100, and ?0.150?e?0.150 are satisfied.Type: ApplicationFiled: September 18, 2023Publication date: March 28, 2024Applicant: TDK CORPORATIONInventors: Hiroki AKIBA, Tetsuhiro TAKAHASHI, Toshihiro IGUCHI
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Patent number: 11940506Abstract: A magnetic sensor includes at least one MR element and a coil. The coil includes at least one conductor portion. The at least one conductor portion is each located at a position such that a partial magnetic field generated by the conductor portion is applied to one of the at least one MR element, the one corresponding to the conductor portion, and extends along an imaginary curve curving to protrude in a direction away from the corresponding MR element.Type: GrantFiled: August 5, 2022Date of Patent: March 26, 2024Assignee: TDK CORPORATIONInventors: Kenzo Makino, Norikazu Ota
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Patent number: 11940300Abstract: The magnetic sensor of the invention has an element portion that is elongate, that exhibits magnetoresistive effect and that has a magnetically sensitive axis in a direction of a short axis thereof. The element portion is non-oval and can be arranged in an imaginary ellipse, wherein the imaginary ellipse has a major axis that connects both ends of the element portion with regard to a direction of a long axis thereof to each other and a minor axis that connects both ends of the element portion with regard to a direction of the short axis thereof to each other, as viewed in a direction that is perpendicular both to the short axis and to the long axis of the element portion.Type: GrantFiled: October 27, 2022Date of Patent: March 26, 2024Assignee: TDK CorporationInventors: Keisuke Uchida, Kazuya Watanabe
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Patent number: 11944018Abstract: A magnetoresistance effect element of the present disclosure includes a first Ru alloy layer, a first ferromagnetic layer, a non-magnetic metal layer, and a second ferromagnetic layer in order, wherein the first Ru alloy layer contains one or more Ru alloys represented by the following general formula (1), Ru?X1-???(1) where, in the general formula (1), the symbol X represents one or more elements selected from the group consisting of Be, B, Ti, Y, Zr, Nb, Mo, Rh, In, Sn, La, Ce, Nd, Sm, Gd, Dy, Er, Ta, W, Re, Os, and Ir, and the symbol ? represents a number satisfying 0.5<?<1, the first ferromagnetic layer contains a Heusler alloy, and the second ferromagnetic layer contains a Heusler alloy.Type: GrantFiled: July 6, 2022Date of Patent: March 26, 2024Assignee: TDK CORPORATIONInventors: Kazuumi Inubushi, Katsuyuki Nakada, Shinto Ichikawa
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Patent number: 11941974Abstract: Systems, methods, and devices for haptic feedback are provided. A microfluidic device includes an inlet port for supplying a fluid into the microfluidic device. A tube receives the fluid from the inlet port. The microfluidic device includes a piezoelectric actuator for realizing a displacement of a substrate to which the microfluidic device is attached, the displacement based on an electrical actuation applied to the piezoelectric actuator, and an amount of the fluid or a pressure in the tube. In some embodiments, the tube includes a carbon nanotube. In some embodiments, an amount of the fluid in the tube is controlled by an actuator (e.g., the piezoelectric actuator).Type: GrantFiled: July 20, 2022Date of Patent: March 26, 2024Assignee: TDK CORPORATIONInventor: Rakesh Sethi
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Patent number: 11942278Abstract: Provided is a thin film capacitor comprising a capacitance portion in which at least one dielectric layer is sandwiched between a pair of electrode layers included in a plurality of electrode layers, wherein the capacitance portion has an opening which extends in a lamination direction in which the plurality of electrode layers and the dielectric layer are laminated and through which one electrode layer of the plurality of electrode layers is exposed, the one electrode layer has an exposed portion exposed at a bottom surface of the opening, the exposed portion is in contact with a wiring layer connecting the one electrode layer and an electrode terminal, and a thickness of the exposed portion of the one electrode layer is smaller than a thickness of other portions of the one electrode layer and is 50% or more of the thickness of the other portions of the one electrode layer.Type: GrantFiled: October 20, 2021Date of Patent: March 26, 2024Assignee: TDK CorporationInventors: Michihiro Kumagae, Kazuhiro Yoshikawa, Kenichi Yoshida, Junki Nakamoto, Norihiko Matsuzaka
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Publication number: 20240093036Abstract: A composite particle of the present invention includes an inorganic particle and a graphene oxide particle that coats at least a part of the inorganic particle, and the graphene oxide particle is a modified graphene oxide particle having a surface modified with a hydrocarbon group optionally having a substituent.Type: ApplicationFiled: September 30, 2021Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Yuta NAKAGAWA, Takashi INAGAKI
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Publication number: 20240096547Abstract: The present disclosure provides a coil device that can be reduced in height, has a small installation area of a case, and is excellent in heat dissipation. A coil device according to the present disclosure includes: a device body including a bobbin and a coil unit of a wire wound around the bobbin; a terminal block arranging a lead portion drawn out from a wire of the coil unit thereon; and a case capable of accommodating the device body. The case includes a support arm extending outside the case, and the terminal block is held by the support arm.Type: ApplicationFiled: September 12, 2023Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Tomohiro FURUICHI, Masaru KUMAGAI, Takuma TANAKA
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Publication number: 20240094313Abstract: A magnetic sensor includes an insulating layer, a first MR element, and a second MR element. The insulating layer includes a first layer and a second layer, and also includes first and second inclined surfaces formed across the first layer and the second layer. Each of the first and second MR elements includes a magnetization pinned layer and a free layer. The magnetization pinned layer and the free layer of the first MR element are disposed on the first inclined surface. The magnetization pinned layer and the free layer of the second MR element are disposed on the second inclined surface.Type: ApplicationFiled: November 30, 2023Publication date: March 21, 2024Applicant: TDK CorporationInventors: Hiromichi UMEHARA, Keita KAWAMORI, Kenzo MAKINO, Masachika HASHINO
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Publication number: 20240094312Abstract: A magnetic sensor includes a substrate including a top surface; an insulating layer disposed on the substrate, the insulating layer including first and second inclined surfaces each inclined with respect to the top surface of the substrate; and an MR element structure. An MR element is disposed on the first inclined surface or the second inclined surface. The MR element includes a bottom surface facing the first inclined surface or the second inclined surface, a top surface, and a first surface connecting the bottom surface and the top surface and including two steps.Type: ApplicationFiled: November 30, 2023Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Hidekazu KOJIMA, Hiromichi Umehara
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Publication number: 20240099152Abstract: A magneto resistive element includes a first ferromagnetic layer, a second ferromagnetic layer, a nonmagnetic layer, and a buffer layer. The nonmagnetic layer is between the first ferromagnetic layer and second ferromagnetic layer. The buffer layer is in contact with the first ferromagnetic layer. The first ferromagnetic layer contains a Heusler alloy containing Co. The buffer layer contains at least a first atom, a second atom, and a third atom other than Co as main components. The buffer layer does not contain Co or contains Co at a proportion less than a compositional proportion of the first atom, the second atom, and the third atom. In a case where an atomic radius of any one atom of the first atom, the second atom, and the third atom is taken as a reference, an atomic radius of another atom thereof is 95% or less or 105% or more of the reference.Type: ApplicationFiled: September 15, 2022Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Kazuumi INUBUSHI, Katsuyuki NAKADA, Shinto ICHIKAWA
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Publication number: 20240091772Abstract: A microfluidic device and a method for flow control of cells or particles in a microfluidic channel are disclosed. The microfluidic device may include a substrate having an outlet channel. The microfluidic device may also include a microfluidic channel arranged on the substrate such that an outlet of the microfluidic channel is positioned above the outlet channel. The microfluidic device may further include a set of piezoelectric actuators arranged above the outlet channel and adjacent to the outlet, the set of piezoelectric actuators configured to eject a portion of a fluid out of the microfluidic channel via the outlet.Type: ApplicationFiled: September 13, 2023Publication date: March 21, 2024Applicant: TDK CorporationInventor: Manish Giri
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Publication number: 20240094315Abstract: A magnetic sensor includes an MR element. The MR element includes a free layer. The free layer has a first surface having a shape that is long in one direction and a second surface located opposite the first surface, and has a thickness that is a dimension in a direction perpendicular to the first surface. The first surface has a first edge and a second edge located at both lateral ends of the first surface. In a given cross section, the thickness at the first edge is smaller than the thickness at a predetermined point on the first surface between the first edge and the second edge.Type: ApplicationFiled: November 22, 2023Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Hirokazu TAKAHASHI, Kenzo MAKINO
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Patent number: 11935679Abstract: A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.Type: GrantFiled: September 28, 2021Date of Patent: March 19, 2024Assignee: TDK CORPORATIONInventors: Yoshihiro Kawasaki, Munehito Nishimura, Setu Tsuchida
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Patent number: 11935700Abstract: A laminated electronic component includes an element body formed by laminating an insulating layer and having a bottom surface used as a mounting surface, and a bottom surface electrode formed on the bottom surface of the element body and containing glass and a sintered metal. The bottom surface electrode includes a first electrode layer and a second electrode layer formed on the element body side from the first electrode layer, an edge portion of the second electrode layer is covered with an overcoat layer which is a part of the element body, the first electrode layer is laminated on the second electrode layer with the overcoat layer interposed therebetween, and a content of glass in the first electrode layer is larger than a content of glass in the second electrode layer.Type: GrantFiled: March 22, 2022Date of Patent: March 19, 2024Assignee: TDK CORPORATIONInventors: Noriyuki Saito, Osamu Hirose, Toru Yoshida, Yoshinori Sato, Akira Suda, Akira Nakamura
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Publication number: 20240087812Abstract: An electronic component includes a component body, a metal terminal, and a bonding material. The component body includes an element body and an external electrode. The metal terminal includes a first main surface and a second main surface, and a side surface. The bonding material electrically and physically connects the external electrode and the metal terminal. The metal terminal includes a first metal layer including the first main surface, a second metal layer including the second main surface, and a terminal body including the side surface. The terminal body is exposed at the side surface, and the first metal layer and the second metal layer are separated from each other on the side surface. Each of the first metal layer and the second metal layer includes a Ni plated layer. The terminal body includes Cu. The bonding material includes solder.Type: ApplicationFiled: July 26, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Toshihiro IGUCHI, Hisashi KOBAYASHI, Norihisa ANDO, Kenya TAMAKI
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Publication number: 20240087816Abstract: A high-voltage feedthrough capacitor includes: a capacitor including an element body in which a through hole extending is formed, and a first electrode and a second electrode disposed facing each other on the element body; a feedthrough conductor inserted through the through hole and electrically connected to the first electrode; a grounding fitting electrically connected to the second electrode; and a first case and a second case. The element body includes: a first end face and a second end face; a first protruding part in which the through hole opens, the first protruding part being provided on the first end face; and a second protruding part in which the through hole opens, the second protruding part being provided on the second end face. The first case is attached to the first protruding part. The second case is attached to the second protruding part.Type: ApplicationFiled: September 12, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Hisashi TANAKA, Yuta KAMO
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Publication number: 20240087798Abstract: A coil component includes a coil configured of a winding, an exterior body provided to cover the coil, and a terminal part configured to be continuous with the winding. A proximal end portion of the terminal part is buried in the exterior body. A distal end portion ahead of the proximal end portion is bent from the proximal end portion and located outside a mounting surface of the exterior body along the mounting surface.Type: ApplicationFiled: April 20, 2023Publication date: March 14, 2024Applicant: TDK CORPORATIONInventors: Junichiro URABE, Toshinori MATSUURA, Hajime KATO, Shintarou KOIKE, Kazushige TOHTA, Takuto KAZAMA, Masashi GOTOH