Patent US3790411A successfully refreshed from Google Patents.
US3790411A
Expired / Lapsed
US
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Method for doping semiconductor bodies by neutral particle implantation
Assignee: AT&T Inc
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Filing: 1972-03-08
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Granted: 1974-02-05
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Expires: 1992-03-08
Abstract
Abstract Doping of semiconductor bodies is achieved by bombarding the surface of the semiconductor with a beam of neutral particles to implant particles therein.
Inventors
- 👤 D Simms
- 👤 N Tolk
- 👤 C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:32
CPC Classifications
H; H05; H05H; H05H5/00; H05H5/04; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3328210A
Cited
US3472751A
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US3388009A
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US3388009B1
Cited
US3472712A
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US3555332A
Cited
US3657542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |