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    • 2. 发明授权
    • Piezoelectric ceramic composition and piezoelectric element containing the same
    • 压电陶瓷组合物和含有它的压电元件
    • US06514427B2
    • 2003-02-04
    • US10008890
    • 2001-11-13
    • Masamitsu NishidaKeiichi TakahashiKojiro OkuyamaJunichi Kato
    • Masamitsu NishidaKeiichi TakahashiKojiro OkuyamaJunichi Kato
    • C04B3500
    • C04B35/01C04B35/495H01L41/1873
    • The present invention provides a piezoelectric ceramic composition that can be manufactured easily by an ordinary sintering method, is free from lead, and has a large frequency constant, a small grain size, and a high mechanical Q. This composition is expressed by a formula of (1-v-w)[(Li1-x-yNaxKy)zRO3].vLMnO3.wBi1/2Na1/2TiO3. The present invention also provides a piezoelectric ceramic composition, including at least one selected from Mn, Cr, and Co that is added to a composition expressed by a formula of (Li1-x-yNaxKy)zRO3 so as to have a ratio thereof to the whole of 0.01 to 1 wt % in terms of MnO2, Cr2O3, and CoO, respectively. In the above-mentioned formulae, 0≦v≦0.05, 0≦0.2, v+w>0, 0.2≦x≦0.97, 0≦y≦0.8, x+y≧0.8, 0.98≦z≦1, L indicates at least one element selected from the rare earth elements, and R denotes at least one element selected from Nb, Ta, and Sb.
    • 本发明提供一种压电陶瓷组合物,其可以通过常规烧结方法容易地制造,不含铅,具有大的频率常数,小的晶粒尺寸和高的机械Q.该组成由式 (1-vw)[(Li1-x-yNaxKy)zRO3] .vLMnO3.wBi1 / 2Na1 / 2TiO3。 本发明还提供一种压电陶瓷组合物,其包含选自Mn,Cr和Co中的至少一种,其被添加到由式(Li1-x-yNaxKy)zRO3表示的组成中,以使其与 分别为MnO 2,Cr 2 O 3和CoO的0.01〜1重量%。 在上述公式中,0 <= v <= 0.05,0 <= 0.2,v + w> 0,0.2 <= x <= 0.97,0 <= y <= 0.8,x + y> = 0.8,0.98 <= z <= 1,L表示选自稀土元素中的至少一种元素,R表示选自Nb,Ta和Sb中的至少一种元素。
    • 4. 发明授权
    • Dielectric ceramic and dielectric device
    • 介质陶瓷和电介质器件
    • US06762142B2
    • 2004-07-13
    • US10251585
    • 2002-09-19
    • Kojiro OkuyamaJunichi KatoHiroshi KagataKenji Iijima
    • Kojiro OkuyamaJunichi KatoHiroshi KagataKenji Iijima
    • C04B35465
    • C04B35/49C04B35/6262C04B2235/3206C04B2235/3249C04B2235/3251C04B2235/3262C04B2235/3275C04B2235/3284C04B2235/604C04B2235/786C04B2235/94C04B2235/96H01P7/10
    • A dielectric ceramic is made of a sintered body of a complex oxide including at least one element selected from the group consisting of Zr, Ti and Mn, at least one element selected from the group consisting of Mg, Zn and Co, and at least one element selected from the group consisting of Nb and Ta, wherein, the complex oxide is represented by a formula xZrO2-yTiO2-zA(1+w)/3B(2−w)/3O2 where ‘A’ in the formula denotes at least one element selected from the group (A) consisting of Mg, Zn and Co, ‘B’ denotes at one element selected from the group (B) consisting of Nb and Ta; x, y, z and w denote values in the respective ranges of 0.20≦x≦0.55, 0.40≦y≦0.55, 0.05≦z≦0.25, and 0≦w≦0.30, and x, y and z have a relationship represented as x+y+z=1; MnO is present in a range of 0.1 mol % to 1.0 mol % to the complex oxide; and an average grain size of the dielectric ceramic is from 10 &mgr;m to 70 &mgr;m, thereby providing a dielectric ceramic that has a high dielectric constant (&egr;r) and an unloaded (Qu) value even in a comparatively low frequency region as a microwave region i.e., in a range of 0.4 GHz to 2.4 GHz and that realizes a desired temperature coefficient (&tgr;f) of a resonant frequency with a high mechanical strength, and thus a dielectric device using the dielectric ceramic is provided.
    • 电介质陶瓷由包含选自Zr,Ti和Mn中的至少一种元素的复合氧化物的烧结体,选自Mg,Zn和Co中的至少一种元素和至少一种 元素选自Nb和Ta,其中复合氧化物由式xZrO2-yTiO2-zA(1 + w)/ 3B(2-w)/ 3O2表示,其中式中的“A”至少表示 选自由Mg,Zn和Co组成的组(A)中的一种元素,'B'表示选自Nb和Ta组成的组(B)中的一种元素; x,y,z和w分别表示0.20 <= x <= 0.55,0.40 <= y <= 0.55,0.05 <= z <= 0.25,0 <= w <0.30的各个范围内的值,x, y和z具有表示为x + y + z = 1的关系; MnO以0.1mol%至1.0mol%的范围存在于复合氧化物中; 并且电介质陶瓷的平均晶粒尺寸为10μm至70μm,从而提供即使在作为微波区域的较低频率区域中也具有高介电常数(ε)和无载(Qu)值的电介质陶瓷,即 ,在0.4GHz至2.4GHz的范围内,并且实现具有高机械强度的谐振频率的期望温度系数(tauf),因此提供了使用电介质陶瓷的电介质器件。
    • 8. 发明授权
    • Wrist sphygmomanometer and cuff spring for the same
    • 手腕血压计和袖口弹簧相同
    • US08292821B2
    • 2012-10-23
    • US12000977
    • 2007-12-19
    • Junichi Kato
    • Junichi Kato
    • A61B5/022A61B5/021
    • A61B5/02233
    • To improve measurement accuracy of blood pressure. A wrist sphygmomanometer comprises a cuff spring formed in a curved shape to fit the semicircle on the side of the pulsation part of the wrist, having a mount portion formed outside; a cuff band including the cuff spring as a core material, having an air bag inside, and wound around a wrist; and a sphygmomanometer main body mounted on the mount portion of the cuff spring, having a pressure pump for supplying air to the air bag, wherein the cuff spring has a protrusion protruding inward formed in a nearly central position in a peripheral direction.
    • 提高血压测量精度。 手腕式血压计包括形成为弯曲形状的袖带弹簧,以将半圆配合在手腕的脉动部分的一侧,具有形成在外侧的安装部分; 袖带,其包括作为芯材的袖带弹簧,在其内具有气囊并缠绕在手腕上; 以及安装在袖带弹簧的安装部上的血压计主体,具有用于向气囊供给空气的压力泵,其中,所述袖带弹簧具有向内侧突出的突出部,所述突起向内突出形成在周向的近似中心位置。
    • 9. 发明申请
    • Wrist sphygmomanometer and cuff spring for the same
    • 手腕血压计和袖口弹簧相同
    • US20050283084A1
    • 2005-12-22
    • US10970723
    • 2004-10-22
    • Junichi Kato
    • Junichi Kato
    • A61B5/022A61B5/02
    • A61B5/02233
    • To improve measurement accuracy of blood pressure. A wrist sphygmomanometer comprises a cuff spring formed in a curved shape to fit the semicircle on the side of the pulsation part of the wrist, having a mount portion formed outside; a cuff band including the cuff spring as a core material, having an air bag inside, and wound around a wrist; and a sphygmomanometer main body mounted on the mount portion of the cuff spring, having a pressure pump for supplying air to the air bag, wherein the cuff spring has a protrusion protruding inward formed in a nearly central position in a peripheral direction.
    • 提高血压测量精度。 手腕式血压计包括形成为弯曲形状的袖带弹簧,以将半圆配合在手腕的脉动部分的一侧,具有形成在外侧的安装部分; 袖带,其包括作为芯材的袖带弹簧,在其内具有气囊并缠绕在手腕上; 以及安装在袖带弹簧的安装部上的血压计主体,具有用于向气囊供给空气的压力泵,其中,所述袖带弹簧具有向内侧突出的突出部,所述突起向内突出形成在周向的近似中心位置。