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101. 发明专利

JPS53130708A ZINC OXIDE BASE CERAMICS FOR HIGH FREQUENCY SPATTERING 失效
公开(公告)号：JPS53130708A
公开(公告)日：1978-11-15
申请号：JP4613577
申请日：1977-04-20
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO , NISHIYAMA KOUJI , MASUO TASUKU
IPC分类号： C04B35/453 , C04B35/00 , C23C14/06 , C23C14/34 , C23C14/40 , H01B3/12 , H01L41/18

102. 发明专利

JPS5140599A 失效
公开(公告)号：JPS5140599A
公开(公告)日：1976-04-05
申请号：JP11358474
申请日：1974-10-01
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO , MUNAKATA MUTSUO , OZAWA KENJI , NAI KIICHI
IPC分类号： C04B35/49 , H01B3/12 , H01L41/18 , H01L41/187

103. 发明专利

JP2504158B2 失效
公开(公告)号：JP2504158B2
公开(公告)日：1996-06-05
申请号：JP1704389
申请日：1989-01-26
申请人： MURATA MANUFACTURING CO
发明人： SANO ATSUSHI , OGAWA TOSHIO
IPC分类号： C04B35/46 , C04B35/00 , C04B35/49 , C04B35/495 , H01L41/187

104. 发明专利

JPH0568889B2 失效
公开(公告)号：JPH0568889B2
公开(公告)日：1993-09-29
申请号：JP25629584
申请日：1984-12-03
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO , ANDO AKIRA
IPC分类号： H03H9/17 , H01L41/00 , H01L41/083 , H03H3/04

105. 发明专利

JPH0420872A ELECTRIC-CHARACTERISTIC MEASURING METHOD USING PIN-TYPE ELECTRODE 失效
公开(公告)号：JPH0420872A
公开(公告)日：1992-01-24
申请号：JP12581890
申请日：1990-05-15
申请人： MURATA MANUFACTURING CO
发明人： MORITA KAZUHIRO , OGAWA TOSHIO
IPC分类号： G01R1/067 , G01R27/02
摘要： PURPOSE:To decrease the cost and to simplify the measuring work by providing a conductive material between pin electrodes and a material to be measured, and performing the measurement. CONSTITUTION:When superconductive transfer temperature Tc of a superconductor sample 1 is measured, the tips of four pin electrodes (a) - (d) are brought into contact with a diagonal line l on the surface of the sample 1. A current I is applied across the electrodes (a) and (d). A potential difference V which is generated across the electrodes (b) and (c) is measured. The potential difference V is divided by the current I, and the resistance value is obtained. When the resistance value becomes 0, the temperature Tc is obtained. Low-melting- point alloy comprising In-Ga is applied on the contact parts of the electrodes (a) - (d), and the electrodes are in contact with the sample through the alloy. Therefore, the contact between the sample 1 and the electrodes (a) - (d) can be ensured, the stable measured value is obtained, the cost is decreased and the measuring work can be simplified.

106. 发明专利

JPH02263761A FERROELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT UTILIZING THE SAME 失效
公开(公告)号：JPH02263761A
公开(公告)日：1990-10-26
申请号：JP8604389
申请日：1989-04-04
申请人： MURATA MANUFACTURING CO
发明人： SANO ATSUSHI , OGAWA TOSHIO
IPC分类号： C04B35/00 , C04B35/46 , C04B35/49 , C04B35/495 , H01L41/187 , H03H9/17
摘要： PURPOSE:To obtain the composition capable of being sintered at low temp. and having a large electromechanical coupling factor and large relative permittivity by incorporating specified amts. of Pb oxide and Ge oxide as the auxiliary component into a ferroelectric ceramic as the main component. CONSTITUTION:Pb oxide and Ge oxide are respectively incorporated into the ferroelectric ceramic (e.g. barium titanate-based ferroelectric ceramic, lead titanate-based ferroelectric ceramic, etc.) as the main component. In this case, the Pb oxide is expressed in terms of PbO, the Ge oxide is expressed in terms of GeO2, and the molar ratio of PbO to GeO2 is expressed by the formula xPbO.yGeO2 where (x)=1 to 6 and (y)=1 to 3. The total content of the PbO and GeO2 is controlled to 0.01 to 30wt.%. By this method, a ferroelectric ceramic capable of being sintered at a low temp. (about 850 to 100 deg.C) and having a large electromechanical coupling factor and large relative permittivity is obtained. Consequently, a piezoelectric element having high energy conversion efficiency can be produced.

107. 发明专利

JPH022327B2 失效
公开(公告)号：JPH022327B2
公开(公告)日：1990-01-17
申请号：JP11341279
申请日：1979-09-03
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO , WAKINO KIKUO
IPC分类号： H03H9/25 , H01L41/04 , H01L41/08 , H03H3/08 , H03H9/02 , H03H9/05 , H03H9/42 , H03H9/64

108. 发明专利

JPS6412711A CHIP TYPE RESONATOR 失效
公开(公告)号：JPS6412711A
公开(公告)日：1989-01-17
申请号：JP17033087
申请日：1987-07-07
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO
IPC分类号： H03H9/205 , H03H9/13 , H03H9/17
摘要： PURPOSE:To obtain a sharp and desired resonance frequency characteristic, by providing the odd number of internal electrodes, and polarizing a piezoelectric body so that the expansion and the contraction of the piezoelectric body between a pair of internal electrodes being generated at the time of applying a voltage on an external electrode can be set in directions opposite to each other. CONSTITUTION:The internal electrodes 11, 12, and 13 are arranged in parallel with each other keeping equal intervals in a thickness direction. Also, the internal electrodes 11, 12, and 13 are connected electrically to the external electrode 14 via lead parts 16 and 17. A remaining electrode 12 is connected electrically to the external electrode 15 on the other side via a lead part 18. On a piezoelectric body 10 part between the internal electrodes 11 and 12 and the piezoelectric body 10 part between the internal electrodes 12 and 13, a polarization processing in the same direction mutually are applied as shown in arrow head. In such a way, vibration energy can be prevented from being leaked to the outside, and is confined in a resonator. As a result, a sharp resonant waveform and the desired resonance frequency characteristic can be obtained.

109. 发明专利

JPS62250680A LAMINATE-TYPE BIMORPH CELL 失效
公开(公告)号：JPS62250680A
公开(公告)日：1987-10-31
申请号：JP9509786
申请日：1986-04-23
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO
IPC分类号： H01L41/083 , H01L41/09
摘要： PURPOSE:To obtain a laminate-type bimorph cell securing a large amount of displacement for a certain impression voltage and being excellent in the reliability in an environment of high humidity, by providing a ceramic sintered body and a plurality of internal electrodes being laminated on the ceramic sintered body with a ceramic layer interposed between. CONSTITUTION:Internal electrodes 41, 43 and 45 of out internal electrodes 41...45, which constitute a first internal electrode group, are electrically connected mutually by a connecting electrode 51, while internal electrodes 42 and 44 constituting a second internal electrode group are electrically connected mutually by the other connecting electrode 52. On the occasion of driving, a positive potential, for instance, is given to the first internal electrode group, while an negative potential is given to the second electrode group, and thereby each of ceramics layers 46...49 can be made to expand and contract as indicated by two-direction arrows surrounded by circles shown in the figure. Since each of the internal electrodes 41 ... 45 is formed in such a width as exposing the same on the end faces 53 and 54 of sintered bodies, and therefore the amount of displacement per a certain inpressed voltage can be made large.

110. 发明专利

JPS61170082A LAMINATED BIMORPH 失效
公开(公告)号：JPS61170082A
公开(公告)日：1986-07-31
申请号：JP1159485
申请日：1985-01-23
申请人： MURATA MANUFACTURING CO
发明人： OGAWA TOSHIO
IPC分类号： H01L41/09
摘要： PURPOSE:To realize a laminated bimorph, which can be displaced in the desired direction at a desired position, by forming a plurality of bent regions in which at least one or more of regions are bent in the direction different from residual regions. CONSTITUTION:An electrode 13, an electrode 16 positioned at a center in the thickness direction and an electrode 22 are lead out in common by a first external electrode 24 while electrodes 14, 15, 19, 20 are lead out in common by a second external electrode 27. Consequently, when plus potential is applied to the first external electrode 2 and minus potential to the second external electrode 27, each ceramic 12a...12d is expanded or contracted in the thickness direction as shown in the bidirectional arrows surrounded by circles in the figure. The ceramic layers 12a...12d are polarized and treated in the opposite directions on both sides of a section connected by a through-hole. Accordingly, the laminated bimorph is bent mutually in the opposite directions on both sides of the electric connecting section by the through-hole.

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