US5066620A
Expired / Lapsed
US
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Conductive paste compositions and ceramic substrates
Assignee: AGC Inc
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Filing: 1990-07-27
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Granted: 1991-11-19
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Expires: 2010-07-27
Abstract
Abstract A surface conductive paste composition to be applied to the surface of a green sheet for a cermaic substrate or to the surface of a ceramic substrate after being fired and to be then fired, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% by weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glas frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Inventors
- 👤 Kazuo Sunahara
- 👤 Tsuneo Ichimatsu
- 👤 Yumiko Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:19
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; C; C03; C03C; C03C8/00; C03C8/02; C03C8/10; C03C8/14; C03C8/18; C03C8/22; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/5116; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05K3/00; H05K3/46; H05K3/4611; H05K3/4626; H05K3/4629; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/24926
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
A surface conductive paste composition to be applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and to be then fired, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 2
Dependent Claim
119 words
A surface conductive paste composition to be applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and to be then fired, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 3
Dependent Claim
96 words
An internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 90 to 99.9% of Au powder, from 0.1 to 10% by weight of crystallized glass frit and from 0 to 9.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 10% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 4
Dependent Claim
96 words
An internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 90 to 99.9% of Au powder, from 0.1 to 10% by weight of crystallized glass frit and from 0 to 9.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 10% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 5
Dependent Claim
222 words
A fired ceramic substrate employing at least one of a surface conductive paste composition applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and then fired, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% by weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition, and an internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 90 to 99.9% of Au powder, from 0.1 to 10% by weight of crystallized glass frit and from 0 to 9.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 10% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 6
Dependent Claim
222 words
A fired ceramic substrate employing at least one of a surface conductive paste composition applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and then fired, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% by weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition, and an internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 90 to 99.9% of Au powder, from 0.1 to 10% by weight of crystallized glass frit and from 0 to 9.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 10% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition.
Claim 7
Dependent Claim
222 words
A fired ceramic substrate employing at least one of a surface conductive paste composition applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and then fired, the solid content of which has a composition comprising from 88 to 99% by weight of Au powder, from 1 to 12% by weight of crystallized glass frit and from 0 to 11% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 12% by weight, and which has a lead compound powder incorporated in an amount of from 0.05 to 3% by weight based on the total amount of said composition, and an internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 92 to 99% of Au powder, from 1 to 8% by weight of crystallized glass frit and from 0 to 7% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 8% by weight, and which has a lead compound powder incorporated in an amount of from 0.3 to 2% by weight based on the total amount of said composition.
Claim 8
Dependent Claim
222 words
A fired ceramic substrate employing at least one of a surface conductive paste composition applied to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired and then fired, the solid content of which has a composition comprising from 88 to 99% by weight of Au powder, from 1 to 12% by weight of crystallized glass frit and from 0 to 11% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 12% by weight, and which has a lead compound powder incorporated in an amount of from 0.05 to 3% by weight based on the total amount of said composition, and an internal conductive paste composition to be used for a multi-layered ceramic substrate, the solid content of which has a composition comprising from 92 to 99% of Au powder, from 1 to 8% by weight of crystallized glass frit and from 0 to 7% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 8% by weight, and which has a lead compound powder incorporated in an amount of from 0.3 to 2% by weight based on the total amount of said composition.
Claim 9
Dependent Claim
41 words
The ceramic substrate according to claim 8, wherein the lead compound is at least one member selected from the group consisting of PbTiO 3 , Pb(Ti,Zr)O 3 , PbNb 2 O 6 , PbTa 2 O 6 and PbZrO 3 .
Claim 10
Dependent Claim
124 words
A coated ceramic substrate prepared by applying to what a surface conductive paste composition, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% by weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition, to the surface of a green sheet of a ceramic substrate or to the surface of a ceramic substrate after being fired, followed by firing.
Claim 11
Dependent Claim
124 words
A coated ceramic substrate prepared by applying to what a surface conductive paste composition, the solid content of which has a composition comprising from 80 to 99.9% by weight of Au powder, from 0.1 to 20% by weight of crystallized glass frit and from 0 to 19.9% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 20% by weight, and which has a lead compound powder incorporated in an amount of from 0 to 5% by weight based on the total amount of said composition, to the surface of a green sheet of a ceramic substrate or to the surface of a ceramic substrate after being fired, followed by firing.
Claim 12
Dependent Claim
122 words
A coated ceramic substrate prepared by applying a surface conductive paste composition, the solid content of which has a composition comprising from 88 to 99% by weight of Au powder, from 1 to 12% by weight of crystallized glass frit and from 0 to 11% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 12% by weight, and which has a lead compound powder incorporated in an amount of from 0.05 to 3% by weight based on the total amount of said composition, to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired, followed by firing.
Claim 13
Dependent Claim
122 words
A coated ceramic substrate prepared by applying a surface conductive paste composition, the solid content of which has a composition comprising from 88 to 99% by weight of Au powder, from 1 to 12% by weight of crystallized glass frit and from 0 to 11% by weight of non-crystallized glass frit, provided that the total of the crystallized glass frit and the non-crystallized glass frit is at most 12% by weight, and which has a lead compound powder incorporated in an amount of from 0.05 to 3% by weight based on the total amount of said composition, to the surface of a green sheet for a ceramic substrate or to the surface of a ceramic substrate after being fired, followed by firing.
Claim 14
Dependent Claim
43 words
A coated ceramic substrate according to claim 7, wherein the lead compound powder is at least one member selected from the group consisting of PbTiO 3 , Pb(Ti,Zr)O 3 , PbNb 2 O 6 , PbTa 2 O 6 and PbZrO 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |