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    4.
    发明专利
    未知

    公开(公告)号：DE2708261A1

    公开(公告)日：1977-09-08

    申请号：DE2708261

    申请日：1977-02-25

    Applicant: SONY CORP

    Inventor： YAMANOI HIROSHI ,  KITAMURA TOMOSABURO

    IPC: H03H9/25 ,  H01L41/00 ,  H03H3/08 ,  H03H9/00 ,  H03H9/02 ,  H03H9/05

    Abstract: A surface acoustic wave apparatus is disclosed in which a conductive earth pattern is formed on almost all the upper surface of a header, a surface acoustic wave element is provided on the header through the conductive earth pattern, and the conductive earth pattern is separated between an input side earth pin and an output side earth pin.

    FIBER REINFORCED PIEZOELECTRIC BENDER TRANSDUCER
    5.
    发明专利
    FIBER REINFORCED PIEZOELECTRIC BENDER TRANSDUCER 未知

    公开(公告)号：CA1154862A

    公开(公告)日：1983-10-04

    申请号：CA350753

    申请日：1980-04-28

    Applicant: SONY CORP

    Inventor： KITAMURA TOMOSABURO ,  MIYAHARA KOSUKE ,  KODERA YOICHI

    IPC: G11B5/592 ,  G11B5/58 ,  H01L41/00 ,  H01L41/09 ,  H02N2/00 ,  H04R17/00 ,  H04R17/08 ,  H01L41/08

    Abstract: An electro-mechanical transducer having a first layer made of piezoelectric material having opposing major surfaces, a pair of electrodes formed on the major surfaces of the first layer, respectively, and a second layer clamped at its one surface to one of the surfaces of the first layer. In this case, the first layer has a Young's modulus of E, the second layer has a Young's modulus Ex in one direction and a Young's modulus Ey in the direction perpendicular to the one direction in the major surface, the Young's moduli E, Ex, Ey satisfy the relation E > Ey, Ex > Ey, and one end of the first and second layers along the one direction is clamped.

    DIELECTRIC ELECTRO-MECHANICAL TRANSDUCER
    9.
    发明专利
    DIELECTRIC ELECTRO-MECHANICAL TRANSDUCER 未知

    公开(公告)号：CA1125343A

    公开(公告)日：1982-06-08

    申请号：CA317192

    申请日：1978-12-01

    Applicant: SONY CORP

    Inventor： KITAMURA TOMOSABURO ,  KODERA YOICHI

    IPC: G11B5/588 ,  H01L41/053 ,  H01L41/09 ,  H02N1/00

    Abstract: An electro-mechanica1 transducer having a dielectric plate which is coated on almost all its opposing major surfaces by electrodes and a base plate which is bonded to one of the major surfaces of the dielectric plate through the electrode and does not follow the shrinkage and expansion of the dielectric plate in the direction parallel to the major surface thereof when a voltage is applied to the dielectric plate through the electrode and base plate perpendicular thereto. In this case, the dielectric plate is made of such a ceramic which is in para -electric phase or antiferro-electric phase at room temperature to avoid residual strain due to domain structure.

    PIEZOELECTRIC CERAMIC COMPOSITION
    10.
    发明专利
    PIEZOELECTRIC CERAMIC COMPOSITION 未知

    公开(公告)号：CA1100750A

    公开(公告)日：1981-05-12

    申请号：CA280827

    申请日：1977-06-17

    Applicant: SONY CORP

    Inventor： KITAMURA TOMOSABURO

    IPC: H01P1/20

    Abstract: A piezoelectric ceramic composition comprising a perovskite structure having the formula: Pbl-ACdA(Ni1/3Nb2/3)xTiyZrzO3 where x is in the range from 0.05 to 0.25 y is in the range from 0.30 to 0.95 z is in the range from 0 to 0.65 and x + y + z = 1 in which the Pb is partially replaced by Cd in the crystal such that A is in the range from 0.005 to 0.02, said composition further including at least one additional element said additional element being cadmium, manganese or tungsten, the amount of , cadmium calculated as CdCO3 being from 0.7 to 1.5 weight % of the perovskite structure including the amount of A, the amount of manganese calculated as MnO2, being in the range from 0 to 1.5 weight % of the perovskite structure, and the amount of tungsten, calculated as WO3 being in the range from 0 to 1.0 weight % of said perovskite structure. -i-

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