Patent US4883705A successfully refreshed from Google Patents.
US4883705A
Expired / Lapsed
US
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Composition for ceramic substrate and substrate
Assignee: AGC Inc
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Filing: 1988-07-06
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Granted: 1989-11-28
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Expires: 2008-07-06
Abstract
Abstract A composition for a ceramic substrate comprising from 30 to 70% by weight of glass powder, from 28 to 70% by weight of refractory filler powder and an oxidizing agent, said glass powder consisting essentially of from 38 to 48% by weight of SiO2, from 1 to 8% by weight of Al2O3, from 0 to 10% by weight of MgO, from 18 to 28% by weight of BaO, from 1 to 8% by weight of CaO, from 0 to 15% by weight of SrO, from 0.5 to 15% by weight of B2O3, from 0 to 20% by weight of PbO, from 10 to 20% by weight of ZnO, from 0 to 7% by weight of TiO2 plus ZrO2 and from 0 to 5% by weight of Li2O plus Na2O plus K2O, and said refractory filler powder comprising from 20 to 60% by weight of alumina, from 0 to 40% by weight of zircon, from 0 to 30% by weight of cordierite and from 0 to 30% by weight of forsterite.
Inventors
- 👤 Keiichi Kawakami
- 👤 Mitsuo Takabatake
- 👤 Jiro Chiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:13
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B32; B32B; B32B18/00; C03; C03C; C03C14/00; C03C14/004; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C3/076; C03C3/089; C03C3/091; C03C3/093; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/16; C04B35/18; C04B41/45; C04B41/50; C04B41/51; C04B41/5127; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W70/692; C03C2214/00; C03C2214/04; C04B2111/00; C04B2111/00474; C04B2111/00612; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/6583; C04B2235/6584; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/50; C04B2237/68; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
257 words
A substrate prepared by forming a green sheet from a slurry comprising an inorganic component and an organic binder, printing a copper paste in a predetermined pattern on the green sheet, and sintering the printed green sheet in a substantially non-oxidizing atmosphere, wherein said inorganic component comprises from 30 to 70% by weight of glass powder, from 28 to 70% by weight of refractory filler powder and 0.01 to 20% by weight of an oxidizing agent "selected from the group consisting of CeO 2 , TiO 2 , BaO 2 SnO 2 , CaO 2 and V 20 .sbsb.5," said glass powder consisting essentially of from 38 to 48% by weight of SiO 2 , from 1 to 8% by weight of Al 2 O 3 , from 0 to 10% by weight of MgO, from 18 to 28% by weight of BaO, from 1 to 8% by weight of CaO, from 0 to 15% by weight of SrO, from 0.5 to 15% by weight of B 2 O 3 , from 0 to 20% by weight of PbO, from 10 to 20% by weight of ZnO, from 0 to 7% by weight of TiO 2 plus ZrO 2 and from 0 to 5% by weight of Li 2 O plus Na 2 O plus K 2 O, and said refractory filler powder comprising from 20 to 60% by weight of alumina, from 0 to 40% by weight of zircon, from 0 to 30% by weight of cordierite and from 0 to 30% by weight of forsterite.
Claim 2
Dependent Claim
257 words
A substrate prepared by forming a green sheet from a slurry comprising an inorganic component and an organic binder, printing a copper paste in a predetermined pattern on the green sheet, and sintering the printed green sheet in a substantially non-oxidizing atmosphere, wherein said inorganic component comprises from 30 to 70% by weight of glass powder, from 28 to 70% by weight of refractory filler powder and 0.01 to 20% by weight of an oxidizing agent "selected from the group consisting of CeO 2 , TiO 2 , BaO 2 SnO 2 , CaO 2 and V 20 .sbsb.5," said glass powder consisting essentially of from 38 to 48% by weight of SiO 2 , from 1 to 8% by weight of Al 2 O 3 , from 0 to 10% by weight of MgO, from 18 to 28% by weight of BaO, from 1 to 8% by weight of CaO, from 0 to 15% by weight of SrO, from 0.5 to 15% by weight of B 2 O 3 , from 0 to 20% by weight of PbO, from 10 to 20% by weight of ZnO, from 0 to 7% by weight of TiO 2 plus ZrO 2 and from 0 to 5% by weight of Li 2 O plus Na 2 O plus K 2 O, and said refractory filler powder comprising from 20 to 60% by weight of alumina, from 0 to 40% by weight of zircon, from 0 to 30% by weight of cordierite and from 0 to 30% by weight of forsterite.
Claim 3
Dependent Claim
143 words
The substrate according to claim 1, wherein the oxidizing agent is CeO 2 in an amount of from 1 to 10% by weight, and the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 0 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 0 to 10% by weight of SrO, from 22 to 28% by weight of BaO, from 0 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 4
Dependent Claim
126 words
The substrate according to claim 2, wherein the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 2 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 2 to 10% by weight of SrO, from 22 to 28% by weight of BaO, from 1 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 5
Dependent Claim
118 words
The substrate according to claim 2, wherein the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 2 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 22 to 28% by weight of BaO, from 1 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 6
Dependent Claim
188 words
A composition for a ceramic substrate comprising from 30 to 70% by weight of glass powder, from 28 to 70% by weight of refractory filler powder and an oxidizing agent, said glass powder consisting essentially of from 38 to 48% by weight of SiO 2 , from 1 to 8% by weight of Al 2 O 3 , from 0 to 10% by weight of MgO, from 18 to 28% by weight of BaO, from 1 to 8% by weight of CaO, from 0 to 15% by weight of SrO, from 0.5 to 15% by weight of B 2 O 3 , from 0 to 20% by weight of PbO, from 10 to 20% by weight of ZnO, from 0 to 7% by weight of TiO 2 plus ZrO 2 and from 0 to 5% by weight of Li 2 0 plus Na.sub. 2 O plus K 2 O, and said refractory filler powder comprising from 20 to 60% by weight of alumina, from 0 to 40% by weight of zircon, from 0 to 30% by weight of cordierite and from 0 to 30% by weight of forsterite.
Claim 7
Dependent Claim
188 words
A composition for a ceramic substrate comprising from 30 to 70% by weight of glass powder, from 28 to 70% by weight of refractory filler powder and an oxidizing agent, said glass powder consisting essentially of from 38 to 48% by weight of SiO 2 , from 1 to 8% by weight of Al 2 O 3 , from 0 to 10% by weight of MgO, from 18 to 28% by weight of BaO, from 1 to 8% by weight of CaO, from 0 to 15% by weight of SrO, from 0.5 to 15% by weight of B 2 O 3 , from 0 to 20% by weight of PbO, from 10 to 20% by weight of ZnO, from 0 to 7% by weight of TiO 2 plus ZrO 2 and from 0 to 5% by weight of Li 2 0 plus Na.sub. 2 O plus K 2 O, and said refractory filler powder comprising from 20 to 60% by weight of alumina, from 0 to 40% by weight of zircon, from 0 to 30% by weight of cordierite and from 0 to 30% by weight of forsterite.
Claim 8
Dependent Claim
143 words
The composition according to claim 5, wherein the oxidizing agent is CeO 2 in an amount of from 1 to 10% by weight, and the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 0 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 0 to 10% by weight of SrO, from 22 to 28% by weight of BaO, from 0 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 9
Dependent Claim
126 words
The composition according to claim 6, wherein the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 2 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 2 to 10% by weight of SrO, from 22 to 28% by weight of BaO, from 1 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 10
Dependent Claim
118 words
The composition according to claim 6, wherein the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 2 to 7% by weight of MgO, from 2 to 7% by weight of CaO, from 22 to 28% by weight of BaO, from 1 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
Claim 11
Dependent Claim
118 words
The composition according to claim 6, wherein the glass powder consists essentially of from 40 to 47% by weight of SiO 2 , from 2 to 7% by weight of Al 2 O 3 , from 2 to 7% by weight of CaO, from 2 to 10% by weight of SrO, from 22 to 28% by weight of BaO, from 1 to 18% by weight of PbO, from 12 to 20% by weight of ZnO, from 1 to 8% by weight of B 2 O 3 , from 0 to 4% by weight of TiO 2 plus ZrO 2 and from 0 to 3% by weight of Li 2 O plus Na 2 O plus K 2 O.
References Cited (Backward Citations)
US2898395A
Cited
US4133690A
Cited
US4618590A
Cited
US4593006A
Cited
US4777092A
Cited
US4743302A
Cited
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