US2882471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconducting material and devices made therefrom
Assignee: AT&T Inc
•
Filing: 1957-05-10
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Granted: 1959-04-14
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Jack H Wernick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:39
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/12; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6938; H10D; H10D62/00; H10D62/80; Y; Y10; Y10S; Y10S438/00; Y10S438/93
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A SEMICONDUCTOR DEVICE CONSISTING ESSENTIALLY OF A BODY OF MATERIAL OF THE SYSTEM OF CLAIM 2 AND HAVING AT LEAST ONE RECTIFYING CONTACT MADE THERETO.
References Cited (Backward Citations)
FR1120304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |