US3849534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt stripping
Assignee: Kennecott Utah Copper LLC
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Filing: 1973-07-19
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Granted: 1974-11-19
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Expires: 1993-07-19
Abstract
Abstract 1. PROCESS FOR REMOVING COBALT FROM AN OXIME SOLUTION BY ACID STRIPPING WHICH COMPRISES CONTACTING THE OXIME SOLUTION WITH AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID AND SODIUM CHLORIDE, ALLOWING THE PHASES TO SEPARATE, AND RECOVERING THE OXIME FOR REUSE, AND WHEREIN THE STRIPPING SOLUTION COMPRISES 2 NORMAL TO 4 NORMAL HCL AND 50 TO 200 G./L. NACL.
Inventors
- 👤 R Skarbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:48
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B3/00; C22B3/20; C22B3/26; C22B3/30; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
PROCESS FOR REMOVING COBALT FROM AN OXIME SOLUTION BY ACID STRIPPING WHICH COMPRISES CONTACTING THE OXIME SOLUTION WITH AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID AND SODIUM CHLORIDE, ALLOWING THE PHASES TO SEPARATE, AND RECOVERING THE OXIME FOR REUSE, AND WHEREIN THE STRIPPING SOLUTION COMPRISES 2 NORMAL TO 4 NORMAL HCL AND 50 TO 200 G./L. NACL.
Claim 2
Dependent Claim
56 words
PROCESS FOR REMOVING COBALT FROM AN OXIME SOLUTION BY ACID STRIPPING WHICH COMPRISES CONTACTING THE OXIME SOLUTION WITH AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID AND SODIUM CHLORIDE, ALLOWING THE PHASES TO SEPARATE, AND RECOVERING THE OXIME FOR REUSE, AND WHEREIN THE STRIPPING SOLUTION COMPRISES 2 NORMAL TO 4 NORMAL HCL AND 50 TO 200 G./L. NACL.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |