US4207369A
Expired / Lapsed
US
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Conductor compositions comprising aluminum, silicon and glass
Assignee: WALTER E HELLER WESTERN Inc
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Filing: 1978-11-20
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Granted: 1980-06-10
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Expires: 1998-11-20
Abstract
Abstract Powder compositions useful for making conductors, e.g. microcircuit conductors, end terminations for capacitors, electrodes for gas discharge display devices, etc. The compositions comprise inorganic powders dispersed in an inert vehicle and are printed and fired in the conventional manner on dielectric substrates. The inorganic powders comprise aluminum, silicon, and glass.
Inventors
- 👤 Casimir W. Kazmierowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:15
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24893; Y10T428/24909; Y10T428/24926; Y10T428/25; Y10T428/252; Y10T428/256; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
A conductor comprising successively a nonconducting substrate; a thick film pattern comprising from about 0.25 to about 30 weight percent silicon, from about 10 to about 50 weight percent glass having a softening point below 660° C., and from about 20 to about 90 weight percent aluminum; and a layer of nickel over said thick film pattern having a thickness from about 0.05 to about 0.5 mil; wherein said thick film pattern has a lower resistivity than an aluminum-glass thick film pattern formed from a composition having the same glass and binder content as employed in the composition from which the silicon-aluminum-glass thick film pattern is formed.
Claim 2
Dependent Claim
107 words
A conductor comprising successively a nonconducting substrate; a thick film pattern comprising from about 0.25 to about 30 weight percent silicon, from about 10 to about 50 weight percent glass having a softening point below 660° C., and from about 20 to about 90 weight percent aluminum; and a layer of nickel over said thick film pattern having a thickness from about 0.05 to about 0.5 mil; wherein said thick film pattern has a lower resistivity than an aluminum-glass thick film pattern formed from a composition having the same glass and binder content as employed in the composition from which the silicon-aluminum-glass thick film pattern is formed.
Claim 3
Dependent Claim
42 words
The conductor of claim 1 wherein said thick film pattern comprises from about 0.25 to about 1.5 weight percent of silicon, from about 25 to about 35 weight percent of said glass, and from about 75 to about 87 weight percent aluminum.
Claim 4
Dependent Claim
40 words
The conductor of claim 1 wherein said thick film pattern comprises from about 7 to about 11 weight silicon, from about 35 to about 45 weight percent of said glass, and from about 35 to about 58 weight percent aluminum.
Claim 5
Dependent Claim
13 words
The conductor of claim 1 wherein said glass is a high lead glass.
Claim 6
Dependent Claim
20 words
The conductor of claim 1 wherein said thick film pattern comprises 10% silicon, 40% of said glass, and 50% aluminum.
Claim 7
Dependent Claim
13 words
The conductor of claim 5 wherein said glass is a high lead glass.
Claim 8
Dependent Claim
101 words
A paste for use in manufacturing an electroconductive material comprising an inert liquid vehicle moiety and a solid moiety wherein said solid moiety comprises from about 0.25 to about 30 weight percent silicon, from about 10 to about 50 weight percent glass having a softening point below 660° C. and from about 20 to about 90 weight percent aluminum, wherein said paste when fired yields an electroconductive material having a lower resistivity than an aluminum-glass electroconductive material formed from paste having the same glass and vehicle content as employed in the paste from which said fired silicon-aluminum-glass electroconductive material is formed.
Claim 9
Dependent Claim
101 words
A paste for use in manufacturing an electroconductive material comprising an inert liquid vehicle moiety and a solid moiety wherein said solid moiety comprises from about 0.25 to about 30 weight percent silicon, from about 10 to about 50 weight percent glass having a softening point below 660° C. and from about 20 to about 90 weight percent aluminum, wherein said paste when fired yields an electroconductive material having a lower resistivity than an aluminum-glass electroconductive material formed from paste having the same glass and vehicle content as employed in the paste from which said fired silicon-aluminum-glass electroconductive material is formed.
Claim 10
Dependent Claim
60 words
The electroconductive paste of claim 7 comprising from about 65 to about 85 weight percent solids and from about 15 to about 35 weight percent vehicle, wherein said solids comprises from about 0.25 to about 1.5 weight percent silicon, from about 25 to about 35 weight percent of said glass, and from about 75 to about 87 weight percent aluminum.
Claim 11
Dependent Claim
40 words
The electroconductive paste of claim 8 wherein said solid comprises from about 7 to about 11 weight percent silicon, from about 35 to about 45 weight percent of said glass, and from about 35 to about 58 weight percent aluminum.
Claim 12
Dependent Claim
16 words
The electroconductive paste of claim 9 comprising 10% silicon, 40% of said glass, and 50% aluminum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |