US3514266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aluminum,calcium,and magnesium from the alkali metals by solvent extraction
Assignee: United States Department of the Interior
•
Filing: 1966-10-27
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Granted: 1970-05-26
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ivan L Nichols
- 👤 Karl C Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:40
CPC Classifications
C; C01; C01D; C01D17/00; C01F; C01F5/00; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/384; C22B3/3846; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3214454A
Cited
US3052514A
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US3104971A
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GB994702A
Cited
US3131994A
Cited
US3302993A
Cited
GB1025866A
Cited
US3259456A
Cited
US3343912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |