US3598761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor compositions for microcircuitry
Assignee: OI Glass Inc
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Filing: 1969-10-06
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Granted: 1971-08-10
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Expires: 1989-10-06
Abstract
Abstract A CLASS OF CONDUCTIVE COMPOSITIONS FOR INTERCONNECTING PARTS IN THICK FILM CIRCUITS IS DISCLOSED WHEREIN CONDUCTOR PATHS ARE FORMED BETWEEN PARTICLES OF MICRON SIZE WHICH ARE COATED WITH NOBLE METAL OVER A CORE WITH CONTRASTING PROPERTIES WHEREBY AFTER FIRING, A SOLDERABLE ADHERENT CONDUCTIVE BODY IS FORMED WHICH HAS THE DESIRABLE PROPERTIES OF PRIOR-ART CONDUCTORS OF THE PALLADIUM-GOLD TYPE, BUT WHICH CONTAIN A SUBSTANTIALLY LESSER NOBLE METAL CONTENT. "MOCK-METAL" PARTICLES SUCH AS PALLADIUM OVER ALUMINA AND GOLD OVER COPPER ARE DESCRIBED.
Inventors
- 👤 John M Woulbroun
- 👤 Daniel W Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:31
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |