US3085859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury recovery and removal
Assignee: Dow Chemical Co
•
Filing: 1960-09-01
•
Granted: 1963-04-16
•
Expires: 1980-09-01
Abstract
No abstract record available.
Inventors
- 👤 Herman G Scholten
- 👤 Glenn E Prielipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/14; C01D3/145; C22; C22B; C22B43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR THE RECOVERY OF MERCURY SALTS FROM A BRINE HAVING MERCURY SALTS DISSOLVED THEREIN WHICH COMPRISES PASSING SUCH BINE THROUGH A STRONGLY BASIC INSOLUBLE ANION EXCHANGE RESIN, AND WASHING THE MERCURY SALTS FROM THE STRONGLY BASIC ANION EXCHANGE RESIN WITH AN EXCESS OF AN AQUEOUS SULFIDE SOLUTION.
Claim 2
Dependent Claim
49 words
A PROCESS FOR THE RECOVERY OF MERCURY SALTS FROM A BRINE HAVING MERCURY SALTS DISSOLVED THEREIN WHICH COMPRISES PASSING SUCH BINE THROUGH A STRONGLY BASIC INSOLUBLE ANION EXCHANGE RESIN, AND WASHING THE MERCURY SALTS FROM THE STRONGLY BASIC ANION EXCHANGE RESIN WITH AN EXCESS OF AN AQUEOUS SULFIDE SOLUTION.
References Cited (Backward Citations)
US2860952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |