US3944696A
Expired / Lapsed
US
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High-adhesion conductors
Assignee: EIDP Inc
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Filing: 1975-02-18
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Granted: 1976-03-16
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Expires: 1995-02-18
Abstract
Abstract Glass frits for producing high-adhesion silver conductor patterns on ceramic substrates, useful in electronic circuitry. Metallizations of such frits. Conductors produced therewith.
Inventors
- 👤 John Robert Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; C; C03; C03C; C03C10/00; C03C10/0054; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24909; Y10T428/24917; Y10T428/24926
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
In electrical conductor patterns of silver or palladium silver particles plus inorganic binder therefor, adherent to a ceramic substrate, conductor patterns of improved soldering characteristics and improved adhesion to the substrate, wherein said inorganic binder is a glass consisting essentially of, by weight, 5-22% PbO 1-5% caO 0.7-3% al 2 O 3 0.7-2.5% b 2 o 3 5-20% siO 2 and 50-85% Bi 2 O 3
Claim 2
Dependent Claim
66 words
In electrical conductor patterns of silver or palladium silver particles plus inorganic binder therefor, adherent to a ceramic substrate, conductor patterns of improved soldering characteristics and improved adhesion to the substrate, wherein said inorganic binder is a glass consisting essentially of, by weight, 5-22% PbO 1-5% caO 0.7-3% al 2 O 3 0.7-2.5% b 2 o 3 5-20% siO 2 and 50-85% Bi 2 O 3
Claim 3
Dependent Claim
37 words
Conductor patterns according to claim 1 wherein said glass consists essentially of, by weight, 8-22% PbO 2-5% caO 0.7-2.1% al 2 O 3 0.7-2% b 2 o 3 7-19% siO 2 and 50-80% Bi 2 O 3
Claim 4
Dependent Claim
36 words
Conductor patterns according to claim 2 wherein said glass consists essentially of, by weight, 8-15% PbO 2-3.3% caO 0.8-1.4% al 2 O 3 0.9-1.6% b 2 o 3 7.5-12.5% siO 2 66-80% bi 2 O 3
Claim 5
Dependent Claim
36 words
Conductor patterns according to claim 3 wherein said glass consists essentially of, by weight, 14.5% PbO 3.3% caO 1.4% al 2 O 3 1.6% b 2 o 3 12.5% siO 2 66.7% bi 2 O 3
Claim 6
Dependent Claim
36 words
Conductor patterns according to claim 3 wherein said glass consists essentially of, by weight, 10.9% PbO 2.4% caO 1.1% al 2 O 3 1.2% b 2 o 3 9.4% siO 2 75.0% bi 2 O 3
Claim 7
Dependent Claim
36 words
Conductor patterns according to claim 3 wherein said glass consists essentially of, by weight, 8.7% PbO 2.0% caO 0.8% al 2 O 3 1.0% b 2 o 3 7.5% siO 2 80.0% bi 2 O 3
References Cited (Backward Citations)
US3350341A
Cited
US3480566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |