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Patent US3211517A successfully refreshed from Google Patents.
US3211517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconducting materials
Assignee: Wyeth Holdings LLC
•
Filing: 1963-08-26
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Granted: 1965-10-12
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 George A Castellion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:59
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/853; Y; Y10; Y10S; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
THE SEMICONDUCTIVE COMPOSITION OF MATTER HAVING THE FORMULA CD2ZNAS2
References Cited (Backward Citations)
US3054842A
Cited
US3016715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |