US3063924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing mineral constituents from an aqueous liquid
Assignee: D'etudes Pour Le Traitement Et L'utilisantion Des Eaux-Setude Ste
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Filing: 1958-10-10
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Granted: 1962-11-13
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Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
- 👤 Gomella Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01J; B01J47/00; B01J47/12; B01D2311/00; B01D2311/26; B01D2311/2623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A PROCESS FOR REMOVING FROM AN AQUEOUS LIQUID AT LEAST PART OF AT LEAST ONE MULTIVALENT CATION AND AT LEAST PART OF AT LEAST ONE MONOVALENT CATION; THE STEPS OF FIRST PASSING THE AQUEOUS LIQUID THROUGH A CATION-EXCHANGING UNIT SO AS TO REMOVE AT LEAST PART OF AT LEAST SAID ONE MULTIVALENT CATION FROM THE AQUEOUS LIQUID, SUBSEQUENTLY PASSING THE LIQUID FROM SAID CATION-EXCHANGING UNIT THROUGH A MULTICELL ELECTRODIALYZING UNIT HAVING A PLURALITY OF CONCENTRATING AND DILUTING CELLS BETWEEN ITS ELECTRODES SO AS TO REMOVE CATIONS AND ANIONS AND TO FORM A CONCENTRATED SALT SOLUTION IN SAID CONCENTRATING CELLS, AND AT LEAST PARTIALLY REGENERATING SAID CATION-EXCHANGING UNIT BY MEANS OF SAID CONCENTRATED SALT SOLUTION DRAWN FROM SAID CONCENTRATING CELLS AND WHICH IS RICH IN ALKALI IONS.
Claim 2
Dependent Claim
127 words
IN A PROCESS FOR REMOVING FROM AN AQUEOUS LIQUID AT LEAST PART OF AT LEAST ONE MULTIVALENT CATION AND AT LEAST PART OF AT LEAST ONE MONOVALENT CATION; THE STEPS OF FIRST PASSING THE AQUEOUS LIQUID THROUGH A CATION-EXCHANGING UNIT SO AS TO REMOVE AT LEAST PART OF AT LEAST SAID ONE MULTIVALENT CATION FROM THE AQUEOUS LIQUID, SUBSEQUENTLY PASSING THE LIQUID FROM SAID CATION-EXCHANGING UNIT THROUGH A MULTICELL ELECTRODIALYZING UNIT HAVING A PLURALITY OF CONCENTRATING AND DILUTING CELLS BETWEEN ITS ELECTRODES SO AS TO REMOVE CATIONS AND ANIONS AND TO FORM A CONCENTRATED SALT SOLUTION IN SAID CONCENTRATING CELLS, AND AT LEAST PARTIALLY REGENERATING SAID CATION-EXCHANGING UNIT BY MEANS OF SAID CONCENTRATED SALT SOLUTION DRAWN FROM SAID CONCENTRATING CELLS AND WHICH IS RICH IN ALKALI IONS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |