Surface acoustic wave device
    2.
    发明授权

    公开(公告)号:US12255610B2

    公开(公告)日:2025-03-18

    申请号:US17903757

    申请日:2022-09-06

    Abstract: A surface acoustic wave device includes a piezoelectric substrate formed from a Ca3Ta(Ga1-xAlx)3Si2O14 single crystal, and an interdigital electrode formed on the surface of the piezoelectric substrate and formed from Al. The interdigital electrode is configured to generate a Love-wave-type SH wave on the surface of the piezoelectric substrate. A normalized film thickness obtained by dividing the film thickness of the interdigital electrode by the wavelength of the Love-wave-type SH wave is 0.16 or less.

    Swing-type speed reducer
    4.
    发明授权

    公开(公告)号:US12018735B2

    公开(公告)日:2024-06-25

    申请号:US17754823

    申请日:2020-09-23

    CPC classification number: F16H13/04 F16H25/06

    Abstract: A swing speed reducer comprising: a main body; an input shaft that is rotatably held in the main body; a precession body that precesses; a swinging body that engages with the precession body and is swung by the precession; and an output shaft that is rotated by the swing of the swinging body; wherein a precession annular groove for precession of the precession body and a swinging annular groove for swinging the swinging body are provided on the surface of a spherical portion.

    Carrier metal catalyst, manufacturing method thereof, and fuel cell

    公开(公告)号:US11990627B2

    公开(公告)日:2024-05-21

    申请号:US17967180

    申请日:2022-10-17

    CPC classification number: H01M4/925 H01M8/1004

    Abstract: The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ωcm·2 or lower.

    GAS DIFFUSION LAYER, SEPARATOR AND ELECTROCHEMICAL REACTOR

    公开(公告)号:US20240120510A1

    公开(公告)日:2024-04-11

    申请号:US18275299

    申请日:2021-02-08

    CPC classification number: H01M8/026 H01M8/0245 H01M8/1004

    Abstract: There is provided a fuel cell gas supply diffusion layer that includes: a sheet-shaped porous body layer having conductivity, the porous body layer allowing permeation and diffusion of a gas therethrough; and a plurality of gas flow path grooves formed on one surface of the porous body layer in a direction respectively directed from a gas inflow side to a gas outflow side. In the fuel cell gas supply diffusion layer, the plurality of gas flow path grooves include: a plurality of gas inflow side grooves formed on the gas inflow side; and a plurality of gas outflow side grooves formed on the gas outflow side. The plurality of gas inflow side grooves include two or more kinds of gas inflow side grooves that have different lengths

    SUPPORTED METAL CATALYST, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING CARRIER

    公开(公告)号:US20230085417A1

    公开(公告)日:2023-03-16

    申请号:US17795027

    申请日:2021-02-05

    Abstract: The present invention provides a supported metal catalyst with excellent effectiveness factor of active metal particles which are also free from deactivation by contacting with ionomer.
    According to the present invention, provided is a supported metal catalyst, comprising a support that is a collective body of conductive particles; and dispersed active metal particles supported on the conductive particles, wherein the conductive particles include a plurality of pores, an average entrance pore diameter of the pores is 1 to 20 nm, a standard deviation of the average entrance pore diameter is equal to or less than 50% of the average entrance pore diameter, a number fraction of the active metal particles supported in a surface layer region of the conductive particles divided by the total number of the active metal particles is equal to or more than 50%, and the surface layer region is a region on a surface of the conductive particles or a region in the pores within a depth of 15 nm from the surface.

    CARRIER METAL CATALYST, MANUFACTURING METHOD THEREOF, AND FUEL CELL

    公开(公告)号:US20230049745A1

    公开(公告)日:2023-02-16

    申请号:US17967180

    申请日:2022-10-17

    Abstract: The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ωcm·2 or lower.

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