Patent US3733182A successfully refreshed from Google Patents.
US3733182A
Expired / Lapsed
US
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Thick film circuits
Assignee: International Standard Electric Corp
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Filing: 1971-01-21
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Granted: 1973-05-15
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Expires: 1991-01-21
Abstract
Abstract ATIN-FREE LEAD CADMIUM SOLDER (75% PB, 25% CD) IS USED TO ATTACH ELECTRICAL DEVICES TO THICK FILM PALLADIUM CONDUCTORS. THE USE OF THIS TIN-FREE SOLDER RESULTS IN SMALLER LOSS OF ADHESION OF THE PALLADIUM TO A SUBSTRATE UPON AGING AND AT ELEVATED TEMPERATURES. D R A W I N G
Inventors
- 👤 W Crossland
- 👤 C Marr
- 👤 L Hailes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:11
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/346; H10; H10W; H10W70/00; H10W70/60; H10W70/62; H10W70/66; H10W70/666; H05K1/00; H05K1/02; H05K1/09; H05K1/092; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12701; Y10T428/12986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |