中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

128 records (took 0.027 seconds)

    Piezoelectric resonator with multi layer electrodes
    1.
    发明授权
    Piezoelectric resonator with multi layer electrodes 失效
    具有多层电极的压电谐振器

    公开(公告)号：US3891873A

    公开(公告)日：1975-06-24

    申请号：US42046573

    申请日：1973-11-30

    Applicant: SONY CORP

    Inventor： YANAGISAWA YUZURU ,  TAMURA HIDEMASA

    IPC: C23C14/04 ,  H01L41/00 ,  H03H3/02 ,  H03H9/13 ,  H04R17/00

    CPC classification number: H03H9/176 ,  H03H9/131

    Abstract: A resonator comprising a single crystal plate of lithium tantalate, lithium niobate or the like is provided having electrodes formed on the plate, the electrodes being multiple layers including gold, chromium, copper and chromium. A novel method of forming such a resonator is also disclosed.

    Abstract translation: 提供了一种包括钽酸锂单晶板，铌酸锂等的谐振器，其具有形成在所述板上的电极，所述电极是包括金，铬，铜和铬的多个层。 还公开了一种形成这种谐振器的新颖方法。

    METHOD OF PRODUCING A DIELECTRIC OF TWO-LAYER CONSTRUCTION
    4.
    发明专利
    METHOD OF PRODUCING A DIELECTRIC OF TWO-LAYER CONSTRUCTION 未知

    公开(公告)号：CA1089114A

    公开(公告)日：1980-11-04

    申请号：CA291959

    申请日：1977-11-29

    Applicant: SONY CORP

    Inventor： OKAMOTO TSUTOMU ,  TAMURA HIDEMASA

    IPC: H05B33/22 ,  C30B19/00 ,  C30B19/02 ,  G02F1/00 ,  G02F1/03 ,  G02F1/05 ,  G09F9/30 ,  H01B3/00 ,  H01B3/12 ,  H03H3/00 ,  H05B33/12 ,  H01L21/20

    Abstract: S P E C I F I C A T I O N T I T L E "METHOD OF PRODUCING A DIELECTRIC OF TWO-LAYER CONSTRUCTION" A thin (less than 500 .mu.m) epitaxial dielectric layer having low photoconductivity is grown on a monocrystalline wafer composed of Bi12GeO20 by a liquid-phase epitaxial growth technique. The composition of the liquid melt from which the dielectric layer is grown is composed of a pseudo-three-component system defined by the formula: (Bi2O3)?(Geo2)?(Y + xGa2O3) wherein Y is a component selected from the group consisting of CaO, MgO, BaO, SrO and mixtures thereof and x is a numeral ranging from 0.05 to 5.0. The pseudo-three-component system is so-selected that in a ternary diagram of the three individual components, the mol ratio of Bi2O3:GeO2:(Y + xGa2O3) is surrounded by a range connecting points A, B and C on such ternary diagram wherein point A is 0.760:0.002:0.238; point B is 0.994:0.002:0.004; and point C is 0.760:0.236:0.004. - i

    7.
    发明专利
    未知

    公开(公告)号：DE3584240D1

    公开(公告)日：1991-10-31

    申请号：DE3584240

    申请日：1985-12-27

    Applicant: SONY CORP

    Inventor： YAMANOI HIROSHI ,  UEDAIRA SATORU ,  SUZUKI MASAYUKI ,  TAMURA HIDEMASA

    IPC: C01G29/00 ,  C04B35/475 ,  C01G23/00

    Abstract: A method of producing bismuth titanate fine powders comprising hydrolysis product of an inorganic titanium compound or water soluble titanium salt, reacting the solution with water soluble bismuth compound in an aqueous alkaline solution having pH value between 14.0 and 14.9, and filtering and washing the resulting precipitates from the solution. Further, a method of producing bismuth titanate fine powder comprising the steps of, prepering an aqueous solution containing hydrolysis product of titanium compound or water soluble titanium salt, reacting the solution with water soluble bismuth compound in an aqueous alkaline solution having pH value between 14.1 and 14.85 at a temperature not lower than 150 DEG C. When the reaction is to be carried out at an ambient pressure, it can be carried at a temperature higher than 50 C and lower than the boiling point of the solution at the ambient pressure. The precipitate resulting from the reaction is filtered and heat-treated to fine powders of bismuth titanate Bi4Ti3O12. When the reaction of the solution is carried out in an autoclave and at higher than 150 DEG C, it is possible to directly obtain the fine powders of bismuth titanate of the orthorhombic structure.

    METHOD FOR PRODUCING FINE PARTICLES OF LEAD ZIRCONATE
    8.
    发明专利
    METHOD FOR PRODUCING FINE PARTICLES OF LEAD ZIRCONATE 未知

    公开(公告)号：CA1287475C

    公开(公告)日：1991-08-13

    申请号：CA507349

    申请日：1986-04-23

    Applicant: SONY CORP

    Inventor： UEDAIRA SATORU ,  YAMANOI HIROSHI ,  TAMURA HIDEMASA

    IPC: C01G25/00 ,  C01G21/00 ,  C01G25/02

    Abstract: The present invention relates to the synthesis of fine particles of lead zirconate which is an antiferroelectric material. The hydrolysis product of a zirconium compound or a water-soluble zirconium salt and a water-soluble lead compound are used as the starting materials. The synthesis is carried out in an aqueous solution having a pH value in the range from 13.5 to 14.4 and at a temperature of at least 175.degree.C in such a manner as to provide for wet synthesis of fing particle of lead zirconate having an extremely small particle size and a highly uniform particle size distribution. The lead zirconate particles are synthesized as crystalline particles without the necessity of special heat treatment for crystallization.

Patent Agency Ranking