US3769208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of waste brines
Assignee: Ethyl Corp
•
Filing: 1971-07-22
•
Granted: 1973-10-30
•
Expires: 1991-07-22
Abstract
Abstract WASTE BRINES FROM BROMINE OR IODINE EXTRACTION PROCESSES ARE TREATED WITH AMMONIA PRIOR TO DISPOSAL.
Inventors
- 👤 S Cook
- 👤 S Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:08
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |