US3179503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of cesium from aqueous solution using phenols
Assignee: Individual
•
Filing: 1962-09-24
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Granted: 1965-04-20
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Donald E Horner
- 👤 Jr David J Crouse
- 👤 Keith B Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:43
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; C01; C01D; C01D17/00; G; G21; G21F; G21F9/00; G21F9/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF RECOVERING CESIUM FROM AN AQUEOUS BASIC SOLUTION WHICH COMPRISES EXTRACTING THE CESIUM WITH AN AQUEOUS IMMISICIBLE ORGANIC SOLVENT PHASE CONSISTING OF A PHENOL SELECTED FROM AN ORTHOPHENYL PHENOL, AN ORTHOBENZYL PHENOL, AND A PARA SUBSTITUTED ALKYL PHENOL WHEREIN THE ALKYL SUBSTITUTENT CONTAINS FROM 9-20 CARBON ATOMS, DISSOLVED IN AN ORGANIC DILUENT TO THE EXTENT OF AT LEAST ABOUT 0.5 MOLAR, AND RECOVERING THE CESIUM FROM THE ORGANIC SOLVENT PHASE.
Claim 2
Independent Claim
72 words
A METHOD OF RECOVERING CESIUM FROM AN AQUEOUS BASIC SOLUTION WHICH COMPRISES EXTRACTING THE CESIUM WITH AN AQUEOUS IMMISICIBLE ORGANIC SOLVENT PHASE CONSISTING OF A PHENOL SELECTED FROM AN ORTHOPHENYL PHENOL, AN ORTHOBENZYL PHENOL, AND A PARA SUBSTITUTED ALKYL PHENOL WHEREIN THE ALKYL SUBSTITUTENT CONTAINS FROM 9-20 CARBON ATOMS, DISSOLVED IN AN ORGANIC DILUENT TO THE EXTENT OF AT LEAST ABOUT 0.5 MOLAR, AND RECOVERING THE CESIUM FROM THE ORGANIC SOLVENT PHASE.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |