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Non-reduction type dielectric ceramic composition

Assignee: Murata Manufacturing Co Ltd
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Filing: 1992-06-30
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Granted: 1993-04-20
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Expires: 2012-06-30
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Abstract

Abstract A non-reduction type dielectric ceramic composition, which contains 100 parts by weight of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 -zMnO 2 -wSiO 2 serving as a main component and 2 to 30 parts by weight of an additive which is a(LiO 1 κ -RO)-(1-a)(BO 3/2 -SiO 2 ), where RO is at least one type of SrO, BaO and CaO, and a is not less than 0.01 nor more than 0.8 in terms of a molar ratio, and satisfies the following relationships in the composition formulas of the above described main component and additive: x, y and m satisfy the following relationships in terms of a molar ratio: x≦x≦1.0 0≦y≦0.2 0.9≦m≦1.1 and z and w satisfy the following relationships when the amount of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 is 100% by weight: 0.1≦z≦5% by weight 0.3≦w≦8% byw weight.

Inventors

  • 👤 Shinichi Ohkubo
  • 👤 Yoshiaki Mori
  • 👤 Yoshihiro Yoshimoto
  • 👤 Harufumi Mandai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:43
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/49

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 141 words
A non-reduction dielectric ceramic composition, which is characterized by containing 100 parts by weight of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 -zMnO 2 -wSiO 2 serving as a main component and 2 to 30 parts by weight of an additive, said x, y and m satisfying the following relationships in terms of a molar ratio: 0≦x≦1.0 0≦y≦0.2 0.9≦m≦1.1 said z and w being in the following ranges when the amount of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 is 100% by weight in said main component: 0.1≦z≦5% by weight 0.3≦w≦8% by weight said additive being a(LiO 1/2 -RO)-(1-a)(BO 3/2 -SiO 2 ), where RO is at least one of SrO, BaO and CaO, and a is not less than 0.01 nor more than 0.8 in terms of a molar ratio.
Claim 2
Dependent Claim 141 words
A non-reduction dielectric ceramic composition, which is characterized by containing 100 parts by weight of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 -zMnO 2 -wSiO 2 serving as a main component and 2 to 30 parts by weight of an additive, said x, y and m satisfying the following relationships in terms of a molar ratio: 0≦x≦1.0 0≦y≦0.2 0.9≦m≦1.1 said z and w being in the following ranges when the amount of (Ca 1-x Sr x ) m (Zr 1-y Ti y )O 3 is 100% by weight in said main component: 0.1≦z≦5% by weight 0.3≦w≦8% by weight said additive being a(LiO 1/2 -RO)-(1-a)(BO 3/2 -SiO 2 ), where RO is at least one of SrO, BaO and CaO, and a is not less than 0.01 nor more than 0.8 in terms of a molar ratio.
Claim 3
Dependent Claim 19 words
A non-reduction dielectric ceramic composition according to claim 1, wherein said m and x satisfy 0.9≦m≦1.03 and 0≦x≦0.1, respectively.
Claim 4
Dependent Claim 15 words
A non-reduction dielectric ceramic composition according to claim 1, wherein said a satisfies 0.01≦a≦ 0.65.
Claim 5
Dependent Claim 14 words
A non-reduction dielectric ceramic composition according to claim 2, wherein said a satisfies 0.01≦a≦0.65.

References Cited (Backward Citations)

JPS59227769A Cited
EP0228667A2 Cited
JPS63289708A Cited
JPS63289709A Cited
JPS63289707A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-04-19 1996-10-19 1997-04-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-04-19 2000-10-19 2001-04-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-04-19 2004-10-19 2005-04-20 $7700.00 Window Closed / Lapsed

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