US3769205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of mercury compounds from water
Assignee: Phillips Petroleum Co
•
Filing: 1972-06-20
•
Granted: 1973-10-30
•
Expires: 1992-06-20
Abstract
Abstract MERCURY COMPOUNDS CAN BE REMOVED FROM AQUEOUS SOLUTIONS BY EXTRACTING THE SOLUTION WITH WATER INSOLUBLE ORGANIC SULFIDES OR DISULFIDES, INCLUDING MIXTURES THEREOF. THE INSOLUBLE ORGANIC PHASE CAN BE READILY SEPARATED FROM THE AQUEOUS PHASE.
Inventors
- 👤 R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
C; C01; C01G; C01G13/00; C02; C02F; C02F1/00; C02F1/26; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/34; C22B3/40; C22B3/402; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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 |