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    ACOUSTIC WAVE DEVICE
    2.
    发明公开
    ACOUSTIC WAVE DEVICE 审中-公开

    公开(公告)号：US20240313737A1

    公开(公告)日：2024-09-19

    申请号：US18659492

    申请日：2024-05-09

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Daisuke ITO

    IPC: H03H9/02 ,  H03H9/145 ,  H03H9/25

    CPC classification number: H03H9/02992 ,  H03H9/02637 ,  H03H9/02834 ,  H03H9/02889 ,  H03H9/145 ,  H03H9/25

    Abstract: An acoustic wave device includes a piezoelectric body layer having a crystal axis and an IDT electrode on the piezoelectric body layer. When an acoustic wave propagation direction is a first direction and an orthogonal or substantially orthogonal direction is a second direction, the crystal axis of the piezoelectric body layer is inclined in the second direction with respect to a thickness direction. The IDT electrode includes first and second busbars that oppose each other, and first and second electrode fingers and each including one end connected to any one of the first and second busbars. A region where the adjacent electrode fingers overlap each other in the first direction is a cross region which includes a central region positioned on a center side in the second direction, and first and second edge regions that oppose each other with the central region interposed therebetween in the second direction.

    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY, NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY
    4.
    发明公开
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY, NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY 审中-公开

    公开(公告)号：US20230223522A1

    公开(公告)日：2023-07-13

    申请号：US18122211

    申请日：2023-03-16

    Applicant: MURATA MANUFACTURING CO., LTD.

    Inventor： Qin SI ,  Daisuke ITO ,  Yasuhiro IKEDA

    IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/58 ,  C01D15/02

    CPC classification number: H01M4/366 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/5825 ,  C01D15/02 ,  H01M2004/027

    Abstract: A secondary battery includes a positive electrode, a negative electrode including a negative electrode active material, and an electrolytic solution. The negative electrode active material includes a lithium-silicon-containing oxide that includes lithium and silicon as constituent elements and includes magnesium present on a surface layer of the lithium-silicon-containing oxide. The lithium-silicon-containing oxide includes a phase including silicon and a phase including at least one kind of lithium silicate represented by Formula (1). A range in which magnesium is present is within a range of greater than or equal to 10 nm and less than or equal to 3000 nm from a surface of the lithium-silicon-containing oxide in a depth direction. Magnesium forms at least one kind of magnesium silicate represented by Formula (2). A ratio of a number of moles of magnesium to a number of moles of lithium is greater than or equal to 0.1 mol % and less than or equal to 20 mol %,


    LiaSibOc  (1)



    where a, b, and c satisfy 1≤a≤6, 1≤b≤3, and 1≤c≤7, respectively,






    MgxSiyOz  (2)



    where x, y, and z satisfy 1≤x≤3, 1≤y≤2, and 1≤z≤4, respectively.

    FRONTEND CIRCUIT, FRONTEND MODULE, COMMUNICATION APPARATUS, AND MULTIPLEXER
    5.
    发明申请
    FRONTEND CIRCUIT, FRONTEND MODULE, COMMUNICATION APPARATUS, AND MULTIPLEXER 审中-公开

    公开(公告)号：US20200382149A1

    公开(公告)日：2020-12-03

    申请号：US16999534

    申请日：2020-08-21

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Hiroyuki NAGAMORI ,  Akio KANEDA ,  Hiroshi MURANAKA ,  Hideki TSUKAMOTO ,  Daisuke ITO ,  Kiwamu SAKANO ,  Daisuke MIYAZAKI

    IPC: H04B1/18 ,  H04B1/52 ,  H03F3/193 ,  H03F3/24 ,  H04B7/04

    Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.

    SOLID-STATE ELECTROLYTE FOR SOLID-STATE BATTERY, SOLID-STATE BATTERY, AND BATTERY PACKAGE
    10.
    发明申请
    SOLID-STATE ELECTROLYTE FOR SOLID-STATE BATTERY, SOLID-STATE BATTERY, AND BATTERY PACKAGE 有权

    公开(公告)号：US20240413391A1

    公开(公告)日：2024-12-12

    申请号：US18809632

    申请日：2024-08-20

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Daisuke ITO

    IPC: H01M10/0562

    Abstract: A solid-state electrolyte that includes: a first solid-state electrolyte part and a second solid-state electrolyte part. The first solid-state electrolyte part has a perovskite structure having a lattice constant that is an integer multiple of a value of greater than or equal to 3.8 Å and less than or equal to 4.1 Å. The second solid-state electrolyte part has an antiperovskite structure having a lattice constant that is an integer multiple of a value of greater than or equal to 3.8 Å and less than or equal to 4.1 Å.

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