Patent US3381741A successfully refreshed from Google Patents.
US3381741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuous casting of ingots
Assignee: Alcoa Corp
•
Filing: 1966-04-13
•
Granted: 1968-05-07
•
Expires: 1986-04-13
Abstract
No abstract record available.
Inventors
- 👤 George R Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:09
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/14; B22D11/10; B22D11/04; B22D11/0401; B22D11/045; B22D11/047
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2367148A
Cited
US3040396A
Cited
US3085303A
Cited
US2983972A
Cited
US3212142A
Cited
US3206808A
Cited
US3210812A
Cited
US3286309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |