US3556878A
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Method of producing a thyristor device
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1967-09-19
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Granted: 1971-01-19
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Expires: 1987-09-19
Abstract
Abstract D R A W I N G A METHOD OF MAKING A THYRISTOR BY ARRANGING A FIRST LAYER OF P-TYPE CONDUCTIVITY UPON ALL THE SURFACES OF AN N-TYPE SUBSTRATE, ARRANGING A P+ LAYER ON ALL THE SURFACES OF THE P LAYER, REMOVING PART OF THE P+ LAYER TO EXPOSE A PORTION OF THE P LAYER AND ARRANGING N-TYPE LAYER ON THE EXPOSED PORTION OF THE PLAYER.
Inventors
- 👤 Karl-Heinz Ginsbach
- 👤 Rigobert Schimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
H; H10; H10D; H10D10/00; H10D18/00; H10D62/00; H10D62/10; H10D62/13; H10D62/141; H10D62/142; H10D99/00; H10P; H10P10/00; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/054; Y10S148/06
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |