US3384459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of sodium chloride from potassium by selective crystallization
Assignee: Texaco Inc
•
Filing: 1964-11-19
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Granted: 1968-05-21
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Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Norman D Carter
- 👤 Jr Frank E Guptill
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0488; B01D11/0426; B01D11/043; C; C01; C01D; C01D3/00; C01D3/04; C01D3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |