US2206562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of aluminum
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1939-01-03
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Granted: 1940-07-02
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Expires: 1959-01-03
Abstract
No abstract record available.
Inventors
- 👤 Gentil Henri Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0053; C22B21/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-02 | 1944-01-01 | 1944-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-02 | 1948-01-01 | 1948-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-02 | 1952-01-01 | 1952-07-02 | $7700.00 | Window Closed / Lapsed |