US3431144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing microminiature coils
Assignee: NEC Corp
•
Filing: 1964-11-24
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Granted: 1969-03-04
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Keiske Yawata
- 👤 Masamichi Shiraishi
- 👤 Hiroshi Shiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:03
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/0006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49117; Y10T29/49123; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/298
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2740928A
Cited
US2517105A
Cited
US3081201A
Cited
US3113040A
Cited
US3148085A
Cited
US3117025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |