Patent US3764496A successfully refreshed from Google Patents.
US3764496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the recovery of mercury from mercury containing liquids
Assignee: Mo och Domsjo AB
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Filing: 1971-07-12
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Granted: 1973-10-09
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Expires: 1991-07-12
Abstract
Abstract A PROCESS IS PROVIDED FOR RECOVERING MERCURY FROM MERCURY-CONTAINING LIQUIDS BY STRIPPING THE MERCURY AS VAPOR FROM THE LIQUID WITH AN INERT GAS, AND WASHING THE MERCURY VAPOR-CONTAINING INERT GAS WITH A SOLUTION CONTAINING AN OXIDIZING AGENT, SUCH AS ACTIVE CHLORINE, SO AS TO ABSORB THE MERCURY VAPOR AND OXIDIZE ELEMENTAL MER- CURY TO MERCURY ION WHICH CAN THEN BE DISSOLVED IN THE SOLUTION IN THE FORM OF COMPLEX MERCURY IONS SUCH AS MERCURY CHLORIDE COMPLEX IONS.
Inventors
- 👤 B Hultman
- 👤 E Norgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:44
CPC Classifications
C; C22; C22B; C22B43/00; C01; C01D; C01D1/00; C01D1/04; C01D1/28; C01G; C01G13/00; C01G13/04
Claims Analysis
Total Claims: 0
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |