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    Solid dielectric capacitor and method of manufacture
    3.
    发明授权
    Solid dielectric capacitor and method of manufacture 失效

    公开(公告)号：US4999738A

    公开(公告)日：1991-03-12

    申请号：US483079

    申请日：1990-02-21

    申请人： Hiroshi Kishi ,  Hirokazu Chazono ,  Minoru Oshio ,  Hiroshi Saito ,  Toshiya Nakamura ,  Hisamitsu Shizuno

    发明人： Hiroshi Kishi ,  Hirokazu Chazono ,  Minoru Oshio ,  Hiroshi Saito ,  Toshiya Nakamura ,  Hisamitsu Shizuno

    IPC分类号： C04B35/46 ,  C04B35/49 ,  H01G4/12

    CPC分类号： C04B35/49 ,  H01G4/1245

    摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2 }+.alpha.CaZrO.sub.3where M is either or both of calcium and strontium, and .alpha., k and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a mixture of boric oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200.degree. C. and then are reheated at a lower temperature in an oxidative atmosphere.

    Solid dielectric capacitor and method of manufacture
    4.
    发明授权
    Solid dielectric capacitor and method of manufacture 失效

    公开(公告)号：US5089932A

    公开(公告)日：1992-02-18

    申请号：US618649

    申请日：1990-11-27

    申请人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    发明人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    IPC分类号： C04B35/49 ,  H01G4/12

    CPC分类号： H01G4/1245 ,  C04B35/49 ,  Y10T29/435

    摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, R is a rare earth element or elements, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of an additive. The additive is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200 degrees C. and then are heated at a lower temperature in an oxidative atmosphere.

    Solid dielectric capacitor and method of manufacture
    5.
    发明授权
    Solid dielectric capacitor and method of manufacture 失效

    公开(公告)号：US5051864A

    公开(公告)日：1991-09-24

    申请号：US602105

    申请日：1990-10-22

    申请人： Hirokazu Chazono ,  Hiroshi Saito ,  Mutsumi Honda ,  Hisamitsu Shizuno ,  Hiroshi Kishi

    发明人： Hirokazu Chazono ,  Hiroshi Saito ,  Mutsumi Honda ,  Hisamitsu Shizuno ,  Hiroshi Kishi

    IPC分类号： C04B35/468 ,  H01G4/12

    CPC分类号： H01G4/1227 ,  C04B35/4682 ,  H01G4/12 ,  Y10T29/435

    摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(Ba.sub.k-x M.sub.x)O.sub.k TiO.sub.2where M is either or both of calcium and strontium, and K and X are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of dichromium trioxide and aluminum oxide. The second ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200 degrees C. and then are reheated at a lower temperature in an oxidative atmosphere.

    Solid dielectric capacitor and method of manufacture
    7.
    发明授权
    Solid dielectric capacitor and method of manufacture 失效

    公开(公告)号：US5103370A

    公开(公告)日：1992-04-07

    申请号：US620834

    申请日：1990-11-29

    申请人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    发明人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    IPC分类号： C04B35/49 ,  H01G4/12

    CPC分类号： H01G4/1245 ,  C04B35/49 ,  Y10T29/435

    摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula(1-.alpha.){(Ba.sub.k-x M.sub.x)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, R is a rare earth element or elements, and .alpha., k, x and y are numerals in specified ranges. To this major ingredient is added a minor proportion of a first additive ingredient and a second additive ingredient. The first additive ingredient is at least either of chromium oxide and aluminum oxide. The second additive ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200 degrees C. and then are heated at a lower temperature in an oxidative atmosphere.

    Solid dielectric capacitor and method of manufacture
    8.
    发明授权
    Solid dielectric capacitor and method of manufacture 失效

    公开(公告)号：US5077636A

    公开(公告)日：1991-12-31

    申请号：US618710

    申请日：1990-11-27

    申请人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    发明人： Hiroshi Saito ,  Mutsumi Honda ,  Hiroshi Kishi ,  Hisamitsu Shizuno ,  Hirokazu Chazono

    IPC分类号： C04B35/49 ,  H01G4/12

    CPC分类号： C04B35/49 ,  H01G4/1245 ,  Y10T29/435

    摘要： A monolithic capacitor having a dielectric ceramic body cosintered with at least two base metal electrodes. The ceramic body is composed of a major ingredient expressed by the formula,(1-.alpha.){(Ba.sub.k-x-z M.sub.x L.sub.z)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-(y/2) }+.alpha.CaZrO.sub.3where M is either or both of magnesium and zinc, L is either or both of calcium and magnesium, R is a rare earth element or elements, and .alpha., k, x, z and y are numerals in specified ranges. To this major ingredient is added a minor proportion of an additive ingredient. The additive ingredient is a mixture of boric oxide or lithium oxide, silicon dioxide and at least one metal oxide selected from among barium oxide, strontium oxide, calcium oxide, magnesium oxide and zinc oxide. For the fabrication of capacitors the mixture of the above major ingredient and additives in finely divided form are formed into moldings of desired shape and size, each with at least two electrodes buried therein. The moldings and electrodes are cosintered in a reductive or neutral atmosphere at temperatures of less than 1200 degrees C. and then are heated at a lower temperature in an oxidative atmosphere.

    Ceramic capacitor and method for fabricating the same
    10.
    发明授权
    Ceramic capacitor and method for fabricating the same 失效
    陶瓷电容器及其制造方法

    公开(公告)号：US5453409A

    公开(公告)日：1995-09-26

    申请号：US894471

    申请日：1992-06-05

    申请人： Hiroshi Kishi ,  Hisamitsu Shizuno ,  Shinya Kusumi ,  Hiroshi Saito

    发明人： Hiroshi Kishi ,  Hisamitsu Shizuno ,  Shinya Kusumi ,  Hiroshi Saito

    IPC分类号： C04B35/49 ,  H01G4/12 ,  C04B35/46

    CPC分类号： C04B35/49 ,  H01G4/1245

    摘要： A miniaturized ceramic capacitor having excellent electric characteristics and substantial capacity can be obtained by firing under a non-oxidative atmosphere at a temperature of up to 1200.degree. C. A dielectric layer of this ceramic capacitor consists of a basic component of 100 parts by weight and an additional component of 0.2 to 5 parts by weight. The basic component consists essentially of a material represented by the following formula:{(Ba.sub.1-w-x Ca.sub.w Mg.sub.x)O}k(Ti.sub.1-y-z Zr.sub.y R.sub.z)O.sub.2-z/2The additional component consists essentially of Li.sub.2 O--SiO.sub.2 --MO, B.sub.2 O.sub.3 --SiO.sub.2 --MO or B.sub.2 O.sub.3 --SiO.sub.2 --Li.sub.2 O.

    摘要翻译： 通过在高达1200℃的温度下在非氧化性气氛下进行烧成，可以获得具有优异的电特性和实质容量的小型化陶瓷电容器。该陶瓷电容器的电介质层由100重量份的碱性组分和 0.2〜5重量份的附加成分。 基本组分基本上由下式表示的材料：{（Ba1-w-xCawMgx）O} k（Ti1-y-zZryRz）O2-z / 2附加组分基本上由Li 2 O-SiO 2 -MO，B 2 O 3 -SiO2-MO或B2O3-SiO2-Li2O。