US3409811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-zone semiconductor rectifier with spaced regions in one outer zone
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1965-11-29
•
Granted: 1968-11-05
•
Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 Gerlach Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:51
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/60; H10D18/00; H10D62/10; H10D62/13; H10D99/00; H10W; H10W42/00; H10W42/80; H10W72/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |