公开(公告)号：US20250070744A1

公开(公告)日：2025-02-27

申请号：US18945931

申请日：2024-11-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Sho NAGATOMO

IPC: H03H9/02 ,  H10N30/853 ,  H10N30/87 ,  H10N30/88

Abstract: An acoustic wave device includes resonators including a support with a hollow portion, a piezoelectric layer, and a functional electrode. The piezoelectric layer is on one main surface of the support and includes first and second main surfaces. The functional electrode is on at least one main surface of the piezoelectric layer and partially matches the hollow portion as seen in a thickness direction of the piezoelectric layer. The resonators include first and second resonators. The functional electrode of the first resonator includes at least one pair of a first and second electrode on the same main surface of the piezoelectric layer. The functional electrode of the second resonator includes upper and lower surface electrodes on the first and second main surfaces of the piezoelectric layer.

公开(公告)号：US20250070241A1

公开(公告)日：2025-02-27

申请号：US18947431

申请日：2024-11-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuji KINTAKA

IPC: H01M10/0562

Abstract: An electrolyte including: a porous insulator having a pore; and a medium and a metal salt that are disposed in the pore, wherein the metal salt is at least one of an alkali metal salt and an alkaline earth metal salt, and a molar ratio of the medium to the metal salt (medium/metal salt) is 0.1 to 2.0.

公开(公告)号：US20250070237A1

公开(公告)日：2025-02-27

申请号：US18944177

申请日：2024-11-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yusuke TAKARA ,  Ryohei TAKANO

IPC: H01M10/0562 ,  H01M10/0525

Abstract: A solid electrolyte ceramic having a chemical composition represented by a specific general formula, and further including one or more transition metal elements selected from Co, Ni, Mn, and Fe, and having a garnet-type crystal structure in which a content X of Li and a content Y of D1 representing one or more elements selected from Ta, Nb, and Bi are each within specific ranges.

公开(公告)号：US20250070236A1

公开(公告)日：2025-02-27

申请号：US18944147

申请日：2024-11-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yusuke TAKARA ,  Ryohei TAKANO

IPC: H01M10/0562 ,  C04B35/488 ,  H01M10/0525 ,  H01M10/0585

Abstract: A solid electrolyte ceramic having a chemical composition represented by: AαBβDγOω wherein A represents one or more of Li, Ga, Al, Mg, Zn, and Sc, and A includes at least Li; B represents one or more of La, Ca, Sr, Ba, and lanthanoid elements, and B includes at least La; and D represents one or more of transition elements capable of being six-coordinate with oxygen and elements belonging to Groups 12 to 15; and one or more of Co, Ni, Mn, and Fe, the solid electrolyte ceramic having a garnet-type crystal structure where: 139≤Y

公开(公告)号：US20250069811A1

公开(公告)日：2025-02-27

申请号：US18937221

申请日：2024-11-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kazuhisa UCHIDA

IPC: H01G4/12 ,  H01G4/012 ,  H01G4/232 ,  H01G4/30

Abstract: A multilayer ceramic capacitor includes a multilayer body including the dielectric ceramic layers and the internal electrode layers which are laminated, and external electrodes connected to the internal electrode layers. The multilayer body includes segregation including Si as a main component in a vicinity of an end of the internal electrode layer in a width direction. An average particle size of the dielectric particles in the vicinity of the end of the internal electrode layer in the width direction in the dielectric ceramic layer is smaller than an average particle size of a dielectric particles in a central portion of the internal electrode layer in the width direction in the dielectric ceramic layer.

公开(公告)号：US20250069805A1

公开(公告)日：2025-02-27

申请号：US18942859

申请日：2024-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Naoki IWAJI ,  Yuuto YAMAMOTO ,  Isao KIMURA ,  Akio MASUNARI

IPC: H01G2/14 ,  H01G4/002

Abstract: A capacitor that includes: a metal base material; a dielectric layer on the metal base material; a conductive layer on the dielectric layer; an oxide layer between the metal base material and the dielectric layer; and an oxygen barrier layer between the oxide layer and the dielectric layer, wherein the oxide layer includes: a first oxidized region containing a metal of the metal base material; and a second oxidized region containing an atom of the oxygen barrier layer and a metal of the metal base material, and a thickness of the first oxidized region is 3 nm or less and is 0% to 50% of a thickness of the second oxidized region.

公开(公告)号：US20250069803A1

公开(公告)日：2025-02-27

申请号：US18947438

申请日：2024-11-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasuhiro ITANI ,  Ryo NARAHARA ,  Seiji KARIMORI

IPC: H01F41/082 ,  H01F41/07

Abstract: A coil component manufacturing apparatus for winding a twisted portion of wires at a desired position of a core. A coil component manufacturing apparatus including a nozzle through which a plurality of wires can be inserted, a wire twisting mechanism that holds a core, rotates the core relative to the nozzle in a direction of twisting the wires, and forms a twisted portion in which the wires are twisted between the nozzle and the core, a wire winding mechanism that holds the core, rotates the core relative to the nozzle in a direction of winding the twisted portion is wound around the core, and winds the twisted portion around the core, and a guide member positioned closer to the core than the nozzle. The guide member guides the twisted portion to a predetermined position of the core when the twisted portion is wound around the core.

公开(公告)号：US20250067814A1

公开(公告)日：2025-02-27

申请号：US18804511

申请日：2024-08-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Chukhung CHAN ,  Chuipong LIU ,  Kwokwai LO

IPC: G01R31/42 ,  G01R19/12 ,  G01R19/165

Abstract: A method of performing a failure detection on an AC input voltage includes comparing the AC input voltage with first and second reference voltages, determining that the AC input voltage is normal, if an absolute value of the AC input voltage is greater than the first reference voltage, determining that the AC input voltage has failed, if a duration of the absolute value of the AC input voltage being less than the second reference voltage is greater than a threshold duration, and determining that the AC input voltage has failed, if the absolute value of the AC input voltage is not less than the second reference voltage and not greater than the first reference voltage, and a duration of an absolute value of a change rate of the AC input voltage being less than a voltage change rate threshold is greater than a predetermined time delay.

公开(公告)号：US20250067521A1

公开(公告)日：2025-02-27

申请号：US18944213

申请日：2024-11-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki MORITA ,  Akimaro YANAGIMACHI ,  Takayuki KONO ,  Takeshi TORITA

IPC: F28D15/04

Abstract: A wick used for heat transport, the wick including a material containing a nanofiber and/or a two-dimensional substance represented by: MQaOb, wherein M is at least one element selected from Groups 3, 4, 5, 6, or 7, Q is at least one element selected from Groups 12, 13, 14, 15, or 16, and excluding O, a is more than 0 but not more than 2, and b is more than 0 but not more than 2.

公开(公告)号：US12237827B2

公开(公告)日：2025-02-25

申请号：US17563936

申请日：2021-12-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Ventsislav Yantchev ,  Patrick Turner ,  Robert B. Hammond

IPC: H03H9/56 ,  H03H3/02 ,  H03H3/04 ,  H03H9/02 ,  H03H9/17 ,  H03H9/205 ,  H03H9/54

Abstract: Filters and methods of making filters are disclosed. A filter device includes a substrate, a piezoelectric plate, and an acoustic Bragg reflector between a surface of the substrate and a back surface of the piezoelectric plate. A first portion of the piezoelectric plate has a first thickness, and a second portion of the piezoelectric plate has a second thickness less than the first thickness. A conductor pattern on front surfaces of the first and second portions of the piezoelectric plate includes a first interdigital transducer (IDT) with interleaved fingers on the first portion, and a second IDT with interleaved fingers on the second portion.