US2860952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the recovery of dissolved mercury salts from brine effluent from mercury cathode electrolytic cells
Assignee: Dow Chemical Co
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Filing: 1957-07-03
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Granted: 1958-11-18
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Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Grafton L Bergeron
- 👤 Charles K Bon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:26
CPC Classifications
C; C22; C22B; C22B43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE RECOVERY OF DISSOLVED MERCURY SALTS FROM BRINE EFFLUENT FROM MERCURY CATHODE ELECTROLYTIC CELLS, WHICH COMPRISES ADDING TO THE BRINE A SOLUBLE SULFIDE COMPOUND IN AN AMOUNT NOT GREATER THAN A 100 PERCENT STOICHIOMETRIC EXCESS TO CONVERT THE DISSOLVED MERCURY TO A MERCURY SULFIDE DISPERSION, INTERMIXING WITH THE BRINE CONTAINING THE MERCURY SULFIDE DISPERSION A SOLUBLE FERRIC SALT AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STARCH AND GUM ARABIC AT A PH IN THE RANGE OF 5 TO 11
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE RECOVERY OF DISSOLVED MERCURY SALTS FROM BRINE EFFLUENT FROM MERCURY CATHODE ELECTROLYTIC CELLS, WHICH COMPRISES ADDING TO THE BRINE A SOLUBLE SULFIDE COMPOUND IN AN AMOUNT NOT GREATER THAN A 100 PERCENT STOICHIOMETRIC EXCESS TO CONVERT THE DISSOLVED MERCURY TO A MERCURY SULFIDE DISPERSION, INTERMIXING WITH THE BRINE CONTAINING THE MERCURY SULFIDE DISPERSION A SOLUBLE FERRIC SALT AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF STARCH AND GUM ARABIC AT A PH IN THE RANGE OF 5 TO 11
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |