Patent JPS6476291A successfully refreshed from Google Patents.
Patent US1473136A successfully refreshed from Google Patents.
Patent NL28939C successfully refreshed from Google Patents.
Patent AT134225B successfully refreshed from Google Patents.
Patent US3244533A successfully refreshed from Google Patents.
Patent US2133290A successfully refreshed from Google Patents.
Patent US2885282A successfully refreshed from Google Patents.
US2885282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of mercury
Assignee: Dow Chemical Co
•
Filing: 1957-07-03
•
Granted: 1959-05-05
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Marshall P Neipert
- 👤 Charles K Bon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:38
CPC Classifications
C; C22; C22B; C22B43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR THE RECOVERY OF MERCURY FROM DECHLORINATED BRINE EFFLUENT FROM MERCURY CATHODE ELECTROLYTIC CELLS, WHICH COMPRISES INTERMIXING THE BRINE EFFLUENT CONTAINING THE MERCURY IN A REACTED FORM AS A SOLUBLE MERCURY COMPOUND WITH AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE IN A PROPORTION OF FROM 0.01 TO 1 POUND MOLE OF THE ALDEHYDE PER THOUSAND GALLEONS OF THE BRINE AT A PH OF AT LEAST 7 TO REDUCE THE MERCURY COMPOUND TO METALLIC MERCURY, AND RECOVERING THE METTALIC MERCURY.
Claim 2
Dependent Claim
85 words
A PROCESS FOR THE RECOVERY OF MERCURY FROM DECHLORINATED BRINE EFFLUENT FROM MERCURY CATHODE ELECTROLYTIC CELLS, WHICH COMPRISES INTERMIXING THE BRINE EFFLUENT CONTAINING THE MERCURY IN A REACTED FORM AS A SOLUBLE MERCURY COMPOUND WITH AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE IN A PROPORTION OF FROM 0.01 TO 1 POUND MOLE OF THE ALDEHYDE PER THOUSAND GALLEONS OF THE BRINE AT A PH OF AT LEAST 7 TO REDUCE THE MERCURY COMPOUND TO METALLIC MERCURY, AND RECOVERING THE METTALIC MERCURY.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |