US3586476A
Expired / Lapsed
US
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Method of stripping ions from an ion-exchange liquid
Assignee: Arthur D Little Inc
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Filing: 1968-10-16
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Granted: 1971-06-22
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Expires: 1988-10-16
Abstract
Abstract AN IMPROVED METHOD OF STRIPPING FERRIC IONS FROM AN ORGANIC ION-EXCHANGE LIQUID WITH AN ACID CHARACTERIZED BY THE STEPS OF WASHING THE ION-EXCHANGE LIQUID WITH WATER PRIOR TO AND SUBSEQUENT TO THE STRIPPING TO PREVENT THE TRANSPORT OF UNWANTED ANIONS BETWEEN THE AQUEOUS LIQUID STREAMS.
Inventors
- 👤 Heinz P Beutner
- 👤 Paul A Huska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/0009; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/384; C22B3/3846; C22B3/40; C22B3/408; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |