US3570001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloyed semiconductor device with aluminum and magnesium electrode
Assignee: US Philips Corp
•
Filing: 1968-06-27
•
Granted: 1971-03-09
•
Expires: 1988-06-27
Abstract
Abstract A DEVICE WHOSE BREAKDOWN VOLTAGE IS IMPROVED BY ADDING TO THE ALLOYED ELECTRODE WHICH CONTTAINS ALUMINUM TO FLATTEN THE ALLOYING FRONT, MAGNESIUM TO ROUND OFF THE FRONT EDGES, IS DESCRIBED.
Inventors
- 👤 Willem Frederik Ch Papendrecht
- 👤 Bernhard Wilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:06
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50; Y; Y10; Y10S; Y10S438/00; Y10S438/965
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |