US3756887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making microfuses on a thin film circuitry panel
Assignee: United States Department of the Navy
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Filing: 1971-07-29
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Granted: 1973-09-04
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Expires: 1991-07-29
Abstract
Abstract A METHOD OF MAKING MICROFUSES ON A THIN FILM CIRCUITRY PANEL COMPRISING DEPOSITING A LAYER OF CHROMIUM ON A SUBSTRATE AND THEN ETCHING SAID CHROMIUM TO PROVIDE A PLURALITY OF RECTANGULAR AREAS EACH HAVING A NOTCH THEREIN. A LAYER OF CONDUCTIVE METAL IS PROVIDED AT EACH END OF EACH RECTANGULAR AREA TO SERVE AS CONDUCTORS.
Inventors
- 👤 R Cruthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
H; H01; H01H; H01H69/00; H01H69/02; H01H69/022; H01C; H01C7/00; H05; H05K; H05K1/00; H05K1/02; H05K1/0286; H05K1/0293; H05K1/16; H05K1/167; H05K2201/00; H05K2201/03; H05K2201/0302; H05K2201/0317; H05K2201/10; H05K2201/10007; H05K2201/10181
Claims Analysis
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |