US1833425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic process for the manufacture of magnesium and the alkaline earth metals, such as calcium by the electrolysis of molten chlorides, and apparatus for carrying the said process into effect
Assignee: Individual
•
Filing: 1926-04-02
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Granted: 1931-11-24
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Expires: 1946-04-02
Abstract
No abstract record available.
Inventors
- 👤 Jessup Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:51
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/04; C25C3/02
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) | 1934-11-23 | 1935-05-25 | 1935-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-23 | 1939-05-25 | 1939-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-23 | 1943-05-25 | 1943-11-24 | $7700.00 | Window Closed / Lapsed |