US2955932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrometallurgical process
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1957-04-22
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Granted: 1960-10-11
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Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Mayer B Goren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:52
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/36; C22B3/362; C22B34/00; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR THE SOLVENT EXTRACTION OF METAL VALUES FROM THEIR AQUEOUS SOLUTIONS WHEREIN THE AQUEOUS SOLUTION IS CONTACTED DURING THE SOLVENT EXTRACTION SOLVENT WITH A NEUTRAL TO BASIC WATER IMMISCIBLE ORGANIC SOLVENT EXTRACTANT FOR THE METAL VALUES TO THEREBY OBTAIN A METAL LOADED EXTRACTANT, THE AQUEOUS SOLUTION CONTAINING SUSPENDED SLIMES WHICH DETRIMENTALLY EFFECT THE EXTRACTION PROCESS, THE IMPROVEMENT COMPRISING TREATING THE AQUEOUS SOLUTION WITH EFFECTIVE QUANTITIES OF A POLYCATIONIC MATERIAL OF HYDROPHILIC CHARACTER HAVING A MOLECULAR WEIGHT REPRESENTED LEAST 5,000 AND LESS THAN THAT MOLECULAR WEIGHT REPRESENTED BY INCIPIENT INSOLUBILITY IN A DILUTE ACID CONTAINING MULTIVALENT ANIONS TO RENDER THE SLIMES HYDROPHILIC IN NATURE AND INHIBIT EMULSION FORMATION.
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR THE SOLVENT EXTRACTION OF METAL VALUES FROM THEIR AQUEOUS SOLUTIONS WHEREIN THE AQUEOUS SOLUTION IS CONTACTED DURING THE SOLVENT EXTRACTION SOLVENT WITH A NEUTRAL TO BASIC WATER IMMISCIBLE ORGANIC SOLVENT EXTRACTANT FOR THE METAL VALUES TO THEREBY OBTAIN A METAL LOADED EXTRACTANT, THE AQUEOUS SOLUTION CONTAINING SUSPENDED SLIMES WHICH DETRIMENTALLY EFFECT THE EXTRACTION PROCESS, THE IMPROVEMENT COMPRISING TREATING THE AQUEOUS SOLUTION WITH EFFECTIVE QUANTITIES OF A POLYCATIONIC MATERIAL OF HYDROPHILIC CHARACTER HAVING A MOLECULAR WEIGHT REPRESENTED LEAST 5,000 AND LESS THAN THAT MOLECULAR WEIGHT REPRESENTED BY INCIPIENT INSOLUBILITY IN A DILUTE ACID CONTAINING MULTIVALENT ANIONS TO RENDER THE SLIMES HYDROPHILIC IN NATURE AND INHIBIT EMULSION FORMATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |