Patent US1789054A successfully refreshed from Google Patents.
US3759760A
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Prevention of autodoping during the manufacturing of a semiconductor device
Assignee: US Philips Corp
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Filing: 1970-05-04
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Granted: 1973-09-18
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Expires: 1990-05-04
Abstract
Abstract THE INVENTION RELATES TO A METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE IN PARTICULAR A LATERAL TRANSISTOR WITH A BURIED LAYER.
Inventors
- 👤 J Encinas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:10
CPC Classifications
H; H10; H10P; H10P32/00; H10P95/00; H10W; H10W15/00; H10W15/01; Y; Y10; Y10S; Y10S148/00; Y10S148/007; Y10S148/037; Y10S148/085; Y10S148/096; Y10S438/00; Y10S438/914; Y10S438/916
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |