US3473976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier lifetime killer doping process for semiconductor structures and the product formed thereby
Assignee: International Business Machines Corp
•
Filing: 1966-03-31
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Granted: 1969-10-21
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Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Paul P Castrucci
- 👤 Martin S Hess
- 👤 Raymond P Pecoraro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:17
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D84/617; H10D84/01; H10D84/0123; H10D84/0126; H10D84/0158; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6309; H10P14/6322; H10P95/00; H10W; H10W10/00; H10W10/01; H10W10/031; H10W10/30; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/049; Y10S148/05; Y10S148/062; Y10S148/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2790940A
Cited
US3067485A
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US3100166A
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US3132408A
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US3342651A
Cited
US3356543A
Cited
US3380153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |