US3479233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for simultaneously forming a buried layer and surface connection in semiconductor devices
Assignee: International Business Machines Corp
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Filing: 1967-01-16
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Granted: 1969-11-18
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Expires: 1987-01-16
Abstract
No abstract record available.
Inventors
- 👤 Robert H F Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/13; H10D62/137; H10P; H10P32/00; H10P32/10; H10P32/15; H10P95/00; H10W; H10W15/00; H10W15/01; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/151
Claims Analysis
Total Claims: 0
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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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |