US2479138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of magnesium hydroxide from brines
Assignee: Dow Chemical Co
•
Filing: 1942-03-02
•
Granted: 1949-08-16
•
Expires: 1962-03-02
Abstract
No abstract record available.
Inventors
- 👤 Scoles Leslie Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:52
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/14; C01F5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270589A
Cited
US2019488A
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US2124002A
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US2089339A
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US2224780A
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US2227534A
Cited
US2255422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |