US3428426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonia stripping process
Assignee: Dixie Chemical Products Co
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Filing: 1966-11-30
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Granted: 1969-02-18
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Leroy L Carney
- 👤 Gerald G Priest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:41
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/10; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/10; C02F1/26; C02F2101/00; C02F2101/10; C02F2101/101; C02F2101/16; C02F2209/00; C02F2209/06; C02F5/00
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |