US3783056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technique for the fabrication of an air isolated crossover
Assignee: AT&T Inc
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Filing: 1972-06-20
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Granted: 1974-01-01
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Expires: 1992-06-20
Abstract
Abstract A TECHNIQUE IS DESCRIBED FOR THE FABRICATION OF AN AIR ISOLATED CROSSOVER INCLUDING A SUPPLEMENTARY INSULATING LAYER WHICH IS COMPATIBLE WITH THE CROSSOVER PROCESS AND THE THIN FILM CONDUCTOR SYSTEM UTILIZED IN ITS FABRICATION THE SUPPLEMENTARY INSULATING LAYER COMPRISES SILICON DIOXIDE AND IS DEPOSITED DURING THE PROCESSING SEQUENCE BY CONVENTIONAL EVAPORATION OR OTHER DEPOSITION TECHNIQUES. THE RESULTANT DOUBLE DIELECTRIC PERMITS FREE MOVEMENT OF BEAMS DURING TEMPERATURE CYCLING, AVOIDS EDGE DEPOSITION PROBLEMS DUE TO SHADOWING ON SHARP EDGES OF THE DIELECTRIC AND MAKES PINHOLES IN THE DIELECTRIC INNOCUOUS.
Inventors
- 👤 H Keller
- 👤 A Pfahnl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/43; H10W20/432; H10N; H10N97/00
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |