US3449088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of lithium calcium,and magnesium bromides using hydroxyethers and glycols
Assignee: Dow Chemical Co
•
Filing: 1965-04-01
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Granted: 1969-06-10
•
Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 John M Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:27
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/20; C01F11/34; C01D; C01D15/00; C01D15/04; C01F5/00; C01F5/26; C01F5/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2561862A
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US2968523A
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US2847279A
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US2969275A
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US3214248A
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US3101250A
Cited
US3219409A
Cited
US3107154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |