专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US06411495B1 Laminated ceramic capacitor 有权
公开(公告)号：US06411495B1
公开(公告)日：2002-06-25
申请号：US09776402
申请日：2001-02-02
申请人： Nobuyuki Wada , Jun Ikeda , Takashi Hiramatsu , Yukio Hamaji
发明人： Nobuyuki Wada , Jun Ikeda , Takashi Hiramatsu , Yukio Hamaji
IPC分类号： H01G410
摘要： The present invention provides a dielectric ceramic composition whose electrostatic capacity has an excellently low temperature dependence; which can be fired in a reducing atmosphere; and which is advantageously used in a laminated ceramic capacitor having an internal electrode formed of a base metal such as nickel or nickel alloy. The dielectric ceramic composition is represented by the following formula: {Ba1-xCaxO}mTiO2+&agr;MgO+&bgr;MnO, wherein 0.001≦&agr;≦0.05; 0.001≦&bgr;≦0.025; 1.000

22. 发明授权

US06243254B1 Dielectric ceramic composition and laminated ceramic capacitor using the same 有权
标题翻译：介电陶瓷组合物和使用其的层压陶瓷电容器
公开(公告)号：US06243254B1
公开(公告)日：2001-06-05
申请号：US09369988
申请日：1999-08-06
申请人： Nobuyuki Wada , Masamitsu Shibata , Takashi Hiramatsu , Yukio Hamaji
发明人： Nobuyuki Wada , Masamitsu Shibata , Takashi Hiramatsu , Yukio Hamaji
IPC分类号： H01G406
CPC分类号： C04B35/4684 , C04B35/465 , H01G4/1227
摘要： Provided is a highly reliable laminated ceramic capacitor in which decrease of dielectric constant under a high electric field is small and which satisfies the B-grade and X7R grade characteristics, using Ni for the inner electrodes, wherein the dielectric material contains about 0.2 to 5.0 parts by weight of Li2O—(Si, Ti)2—MO oxides (MO is at least one of the compounds of Al2O3 and ZrO2) or SiO2—TiO2—XO oxides (XO is at least one of the compounds of BaO, CaO, SrO, MgO, ZnO and MnO) relative to 100 parts by weight of a principal component represented by (Ba1−xCaxO)mTiO2+&agr;Re2O3+&bgr;MgO+&ggr;MnO (Re2O3 represents at least one of Y2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3 and Yb2O3).
摘要翻译：提供了一种高度可靠的层叠陶瓷电容器，其中使用Ni作为内部电极，其中高电场下介电常数的降低小且满足B级和X7R等级特性，其中介电材料含有约0.2至5.0份的Li2O-（Si，Ti）2-MO氧化物（MO是Al2O3和ZrO2的化合物中的至少一种）或SiO 2 -TiO 2 -XO氧化物（XO是BaO，CaO，SrO的化合物中的至少一种，MgO，ZnO和MnO）相对于100重量份由（Ba1-xCaxO）mTiO2 +αRe2O3+βMgO+γMnO表示的主成分（Re2O3表示Y2O3，Gd2O3，Tb2O3，Dy2O3，Ho2O3，Er2O3和Dy2O3中的至少一种） Yb2O3）。

23. 发明授权

US5672220A Method of producing a laminated electronic device 失效
标题翻译：层压电子器件的制造方法
公开(公告)号：US5672220A
公开(公告)日：1997-09-30
申请号：US636685
申请日：1996-04-23
申请人： Nagato Omori , Yukio Hamaji , Yoshiaki Mori , Yukio Sakabe
发明人： Nagato Omori , Yukio Hamaji , Yoshiaki Mori , Yukio Sakabe
IPC分类号： H01G4/12 , H01G4/30 , H05K1/03 , H05K3/46 , C04B37/00
CPC分类号： H01G4/30 , H05K1/0306 , H05K3/4611 , H05K3/4629
摘要： A plurality of dielectric ceramic sheets having inner electrodes thereon are laminated and sintered. The ceramic sheets are made of a non-reducing dielectric material, and the inner electrodes are made of a base metal or a base metal alloy. After a binder removing step, the laminate is sintered in a mixed gas which contains either one or both of carbon dioxide with a purity of 99.9% or more and carbon monoxide with a purity of 99.9% or more as its main constituent and further contains hydrogen and oxygen with their densities regulated.
摘要翻译：其上具有内电极的多个介电陶瓷片被层压并烧结。陶瓷片由非还原电介质材料制成，内电极由贱金属或贱金属合金制成。在粘合剂除去步骤之后，将层压体在含有纯度为99.9％以上的二氧化碳中的一种或两种作为主要成分的纯度为99.9％以上的一氧化碳的混合气体中烧结，并且还含有氢氧气密度调节。

24. 发明授权

US5626788A Production of magnetic oxide powder 失效
标题翻译：生产磁性氧化物粉末
公开(公告)号：US5626788A
公开(公告)日：1997-05-06
申请号：US447933
申请日：1995-05-23
申请人： Shinsei Okabe , Yukio Hamaji
发明人： Shinsei Okabe , Yukio Hamaji
IPC分类号： C01G49/00 , C01G51/00 , C01G53/00 , C04B35/622 , H01F1/36 , C04B33/26
CPC分类号： C01G49/0018 , C01G49/0063 , C01G49/0072 , C01G51/00 , C01G53/00 , C01P2002/32 , C01P2006/42
摘要： A powder of magnetic oxides given by the general formula:MeFe.sub.2 O.sub.4where Me is at least one element of divalent metal element selected from the group consisting of Ni, Zn, Cu, Mn and Co, is produced by a method comprising the steps of preparing a magnetic oxide precursor composed of .alpha.-FeOOH and a complex carbonate compound of at least one divalent metal element deposited on surfaces of particles of .alpha.-FeOOH; and then treating the resultant magnetic oxide precursor with heat.
摘要翻译：由通式MeFe 2 O 4给出的磁性氧化物粉末，其中Me是选自Ni，Zn，Cu，Mn和Co中的至少一种选自Ni，Zn，Cu，Mn和Co的二价金属元素，通过包括以下步骤的方法制备：由α-FeOOH组成的氧化物前体和沉积在α-FeOOH颗粒表面上的至少一种二价金属元素的复合碳酸酯化合物; 然后用热处理所得的磁性氧化物前体。

25. 发明授权

US5432136A Dielectric ceramic compositions 失效
标题翻译：介电陶瓷组合物
公开(公告)号：US5432136A
公开(公告)日：1995-07-11
申请号：US278620
申请日：1994-07-21
申请人： Masamitsu Shibata , Yukio Hamaji
发明人： Masamitsu Shibata , Yukio Hamaji
IPC分类号： C04B35/468 , H01B3/12 , H01G4/12 , C04B35/46
CPC分类号： C04B35/4684 , H01B3/12 , H01G4/1227
摘要： The present invention is directed to a dielectric ceramic composition composed of, 97.5 to 99.95 wt. % of main component represented by, {100-(a+b+c+d)} (Ba.sub.100-x Pb.sub.x) TiO.sub.3 +aZnO+bBi.sub.2 O.sub.3 +cNb.sub.2 O.sub.5 +dRe.sub.2 O.sub.3 (0.5.ltoreq.a.ltoreq.4.5, 0.5.ltoreq.b.ltoreq.4.5, 0.5.ltoreq.c.ltoreq.4.5, 0.5.ltoreq.d.ltoreq.5.5 and 0
摘要翻译：本发明涉及一种电介质陶瓷组合物，其组成为97.5至99.95wt。由（{100-（a + b + c + d）}（Ba100-x Pbx）TiO3 + aZnO + bBi2O3 + cNb2O5 + dRe2O3（0.5≤a≤4.5,0.5）表示的主要成分的％ b =4.5,0.5≤c=4.5,0.5≤d≤5.5和0

26. 发明授权

US5328718A Production of barium titanate thin films 失效
标题翻译：生产钛酸钡薄膜
公开(公告)号：US5328718A
公开(公告)日：1994-07-12
申请号：US969027
申请日：1992-10-30
申请人： Yoshio Abe , Yukio Hamaji , Yukio Sakabe
发明人： Yoshio Abe , Yukio Hamaji , Yukio Sakabe
IPC分类号： C01G23/00 , C04B35/46 , C04B35/468 , H01B3/00 , H01B3/12 , H01L21/314 , H01L21/316 , B05D5/12
CPC分类号： H01L21/31691 , H01L41/1871 , H01L41/317
摘要： A thin film of barium titanate is formed on a substrate by immersing the substrate in an aqueous solution containing barium ions and titanium alkoxide. The aqueous solution may contain not more than 20 vol % of one or more alkanolamines expressed by the general formula:HO(C.sub.n H.sub.2n)mNH.sub.3-mwhere n is not more than 10, and m=1, 2 or 3.
摘要翻译：通过将基板浸入含有钡离子和钛醇盐的水溶液中，在基板上形成钛酸钡薄膜。水溶液可以含有不多于20体积％的一种或多种由以下通式表示的链烷醇胺：HO（CnH2n）mNH3-m，其中n不大于10，m = 1,2或3。

27. 发明授权

US4537865A Process for preparing a particulate ceramic material 失效
标题翻译：微粒陶瓷材料的制备方法
公开(公告)号：US4537865A
公开(公告)日：1985-08-27
申请号：US629846
申请日：1984-07-11
申请人： Shinsei Okabe , Hiroshi Komatsu , Yukio Hamaji , Shozo Kojima , Yoshiharu Kato
发明人： Shinsei Okabe , Hiroshi Komatsu , Yukio Hamaji , Shozo Kojima , Yoshiharu Kato
IPC分类号： C01G23/00 , C01G25/00 , C04B35/468 , C04B35/46
CPC分类号： B82Y30/00 , C01G23/003 , C01G25/006 , C04B35/4684 , C01P2004/02 , C01P2004/50 , C01P2004/62 , C01P2004/64
摘要： A process for preparing a particulate ceramic material comprising the steps of:(a) adding carbon dioxide or an aqueous solution of a soluble carbonate to first aqueous solution of a nitrate or chloride of Ba, Sr, Ca or Mg in a first vessel to adjust the pH of said first aqueous solution to between 7 and 10 thereby forming a carbonate precipitate;(b) adding an aqueous solution of a soluble hydroxide to a second aqueous solution of a nitrate or chloride of Ti, Zr, Sn or Pb in a second vessel to adjust the pH of said second aqueous solution to between 7 and 10 thereby forming a hydroxide precipitate;(c) combining slurries containing the precipitates formed in said first and second vessels;(d) mixing the combined slurries;(e) passing the slurries through a filter;(f) washing the filter cake with water;(g) drying the filter cake to form a powder;(h) calcining the dried powder; and(i) grinding the calcined powder.
摘要翻译：一种制备颗粒状陶瓷材料的方法，包括以下步骤：（a）在第一容器中将二氧化碳或可溶性碳酸盐水溶液加入到Ba，Sr，Ca或Mg的硝酸盐或氯化物的第一水溶液中以调节所述第一水溶液的pH为7至10，由此形成碳酸盐沉淀物; （b）在第二容器中将可溶性氢氧化物的水溶液加入到Ti，Zr，Sn或Pb的硝酸盐或氯化物的第二水溶液中以将所述第二水溶液的pH调节至7至10，从而形成氢氧化物沉淀; （c）组合含有形成在所述第一和第二容器中的沉淀物的浆料; （d）混合组合的浆料; （e）使浆料通过过滤器; （f）用水清洗滤饼; （g）干燥滤饼以形成粉末; （h）煅烧干粉; 和（i）研磨煅烧粉末。

28. 发明授权

US06205015B1 Dielectric ceramic, method for producing the same, laminated ceramic electronic element, and method for producing the same 有权
标题翻译：介电陶瓷，其制造方法，层叠陶瓷电子元件及其制造方法
公开(公告)号：US06205015B1
公开(公告)日：2001-03-20
申请号：US09233335
申请日：1999-01-20
申请人： Nobuyuki Wada , Jun Ikeda , Takashi Hiramatsu , Yukio Hamaji
发明人： Nobuyuki Wada , Jun Ikeda , Takashi Hiramatsu , Yukio Hamaji
IPC分类号： H01G406
CPC分类号： H01G4/1227 , C04B35/4682
摘要： A dielectric ceramic which exhibits an excellent electrostatic capacity-temperature characteristic; which allows use of a base metal such as nickel; which can be fired in a reducing atmosphere; and which is suitable for constituting a dielectric ceramic layer of a laminated ceramic electronic element such as a laminated ceramic capacitor; is obtained by firing barium titanate powder in which the c-axis/a-axis ratio in the perovskite structure is in the range of about 1.003 to 1.010 and the amount of OH groups in the crystal lattice is about 1 wt. % or less. The barium titanate powder a starting material preferably has a maximum particle size of about 0.5 &mgr;m or less and an average particle size of about 0.1-0.3 &mgr;m, and individual particles of the barium titanate powder comprise a low-crystallinity portion 21 and a high-crystallinity portion 23, with the diameter of the low-crystallinity portion being less than about 0.65 times the particle size of the powder. When sintered, the powder satisfies the ratio of (average grain size of the fired dielectric ceramic)/(average particle size of barium titanate powder serving as a starting material), which is referred to as R, of about 0.90-1.2, to thereby suppress considerable grain growth. A laminated ceramic electronic element including a laminate of a plurality of layers of the above-mentioned dielectric ceramic, as well as a method for producing the same, is described.
摘要翻译：表现出优异的静电电容 - 温度特性的介电陶瓷; 其允许使用诸如镍的贱金属; 可在还原气氛中燃烧; 适用于层叠陶瓷电容器等层叠陶瓷电子元件的介电陶瓷层的构成; 是通过煅烧其中钙钛矿结构中的c轴/ a轴比在约1.003至1.010的范围内并且晶格中的OH基的量为约1重量％的钛酸钡粉末而获得的。％或更少。作为起始原料的钛酸钡粉末的最大粒径优选为0.5μm以下，平均粒径为0.1〜0.3μm左右，钛酸钡粉末的单个粒子为低结晶性部21，结晶度部分23，低结晶度部分的直径小于粉末粒度的约0.65倍。当烧结时，粉末满足作为R的（烧结后的电介质陶瓷的平均粒径）/（作为原料的钛酸钡粉末的平均粒径）为约0.90〜1.2的比例，由此抑制可观的粮食增长。描述了包括上述介电陶瓷的多层的叠层体的层压陶瓷电子元件及其制造方法。

29. 发明授权

US5879812A Monolithic ceramic capacitor and method of producing the same 失效
标题翻译：单片陶瓷电容器及其制造方法
公开(公告)号：US5879812A
公开(公告)日：1999-03-09
申请号：US657997
申请日：1996-06-04
申请人： Toshiki Nishiyama , Yukio Hamaji
发明人： Toshiki Nishiyama , Yukio Hamaji
IPC分类号： H01H13/02 , H01G4/12 , H01H13/14 , H01H13/702 , H01H13/703 , B32B17/00
CPC分类号： H01G4/1227 , H01H13/702 , H01H13/703 , H01H2205/006 , H01H2209/002 , H01H2209/038 , H01H2209/06 , H01H2209/082 , H01H2215/01 , H01H2215/036 , H01H2219/014 , H01H2219/034 , H01H2221/05 , H01H2221/07 , H01H2229/046
摘要： Disclosed is a monolithic ceramic capacitor composed of plural dielectric ceramic layers made of a ceramic material comprising strontium titanate and bismuth oxide or the like, plural inner electrodes made of a base metal material comprising nickel or a nickel alloy, which are laminated via the dielectric ceramic layer to produce the electrostatic capacity of the capacitor, and outer electrodes as electrically connected with the inner electrodes. Each dielectric ceramic layer in the capacitor contains a reduction inhibitor, for example aMO+bMnO.sub.2 +cB.sub.2 O.sub.3 +(100--a--b--c)SiO.sub.2 (where M is at least one of Mg, Sr, Ca and Ba; and a, b and c each are, in % by mol, 10.ltoreq.a.ltoreq.60, 5.ltoreq.b.ltoreq.20 and 20.ltoreq.c.ltoreq.35). In producing the capacitor, the laminate of dielectric ceramic layers may be fired in a neutral or reducing atmosphere without being reduced.
摘要翻译：公开了一种由包括钛酸锶和氧化铋等的陶瓷材料制成的多个介电陶瓷层组成的单片陶瓷电容器，由包含镍或镍合金的贱金属材料制成的多个内电极通过电介质陶瓷以产生电容器的静电容量，以及与内部电极电连接的外部电极。电容器中的每个电介质陶瓷层包含还原抑制剂，例如M + BMnO 2 + cB 2 O 3 +（100-abc）SiO 2（其中M是Mg，Sr，Ca和Ba中的至少一种; a，b和c各自，以摩尔％计，10

30. 发明授权

US5612268A Dielectric ceramic composition 失效
标题翻译：介电陶瓷组合物
公开(公告)号：US5612268A
公开(公告)日：1997-03-18
申请号：US447234
申请日：1995-05-22
申请人： Sakiko Iwamoto , Masamitsu Shibata , Yukio Hamaji
发明人： Sakiko Iwamoto , Masamitsu Shibata , Yukio Hamaji
IPC分类号： C04B35/468 , H01B3/12 , H01G4/12 , C04B35/462 , C04B35/475 , C04B35/495
CPC分类号： C04B35/4682 , H01B3/12 , H01G4/1227
摘要： The present invention relates to a dielectric ceramic composition, comprising from 97.5 to 99.95% by weight of{100-(a+b+c+d)}BaTiO.sub.3 +aZnO+b(2Bi.sub.2 O.sub.3.3AO.sub.2)+cTa.sub.2 O.sub.5 +dRe.sub.2 O.sub.3as main component and from 0.05 to 2.5% by weight of glass mainly comprising SiO.sub.2, and possibly also containing from 0.01 to 0.5% by weight of at least one oxides of Cr, Mn, Fe, Co, and/or Ni. A represents Zr or Sn; Re represents at least one of La, Pr, Nd, Sm, Dy and Er; and {100-(a+b+c+d)}, a, b, c, and d represent molar percent which satisfy the following relationships:______________________________________ 0.5 .ltoreq. a .ltoreq. 4.5 0.5 .ltoreq. b .ltoreq. 4.5 0.5 .ltoreq. c .ltoreq. 4.5 0.5 .ltoreq. d .ltoreq. 5.5. ______________________________________
摘要翻译：本发明涉及一种电介质陶瓷组合物，其包含97.5-99.95重量％的{100-（a + b + c + d）} BaTiO3 + aZnO + b（2Bi2O3.3AO2）+ cTa2O5 + dRe2O3为主要成分， 0.05-2.5重量％的主要包含SiO 2的玻璃，并且还可能含有0.01-0.5重量％的至少一种Cr，Mn，Fe，Co和/或Ni的氧化物。 A表示Zr或Sn; Re表示La，Pr，Nd，Sm，Dy和Er中的至少一种; 和{100-（a + b + c + d）}，a，b，c和d表示满足以下关系的摩尔百分比：-0.5

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式