Patent US3785803A successfully refreshed from Google Patents.
US3785803A
Expired / Lapsed
US
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Extraction of mercury from alkaline brines
Assignee: United States Atomic Energy Commission
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Filing: 1972-03-01
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Granted: 1974-01-15
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Expires: 1992-03-01
Abstract
Abstract This invention is for a method of quantitatively removing mercury from aqueous waste streams with certain selected liquid organic amines. The method in its preferred form is particularly appropriate for removing mercury from aqueous brine solutions. Efficient and quantitative recovery of the extracted mercury is also provided.
Inventors
- 👤 F Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:23
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/28; C01D1/34; C01D3/00; C01D3/04; C01D3/14; C01D3/18; C01G; C01G13/00; C02; C02F; C02F1/00; C02F1/26; C02F1/52; C02F1/5236; C02F1/5272; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/288; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S210/00; Y10S210/928
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
The method according to claim 1 where R capryl and R1 methyl.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |