US3030287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the removal of small quantities of strong electrolytes from solutions of weak electrolytes
Assignee: Joh A Benckiser GmbH
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Filing: 1958-10-15
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Granted: 1962-04-17
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Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Schulz Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:07
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/52; H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/047; B01D2311/00; B01D2311/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A METHOD OGF REMOVING MINOR QUANTITIED OF STRONG ELECTROLYTES FROM AN AQUEOUS SOLUTION OF A WEAK ELECTROLYTE BY SUBJECTING SAID AQUEOUS SOLUTION TO ELECTRODIALYSIS IN AN ELECTRODIALYTIC CELL INCLUDING AT LEAST ONE ION EXCHANGE MEMBRANE, THE IMPROVEMENT WHICH COMPRISES ADDING A MINOR AMOUNT OF A WATER MISCIBLE NEUTRAL ORGANIC LIQUID WHICH IS MISCIBLE WITH SAID AQUEOUS SOLUTION AND NON-REACTABLE WITH SAID ELECTROLYTES BEFORE SUBJECTING SAID AQUEOUS SOLUTION TO ELECTRODIALYSIS.
Claim 2
Dependent Claim
70 words
IN A METHOD OGF REMOVING MINOR QUANTITIED OF STRONG ELECTROLYTES FROM AN AQUEOUS SOLUTION OF A WEAK ELECTROLYTE BY SUBJECTING SAID AQUEOUS SOLUTION TO ELECTRODIALYSIS IN AN ELECTRODIALYTIC CELL INCLUDING AT LEAST ONE ION EXCHANGE MEMBRANE, THE IMPROVEMENT WHICH COMPRISES ADDING A MINOR AMOUNT OF A WATER MISCIBLE NEUTRAL ORGANIC LIQUID WHICH IS MISCIBLE WITH SAID AQUEOUS SOLUTION AND NON-REACTABLE WITH SAID ELECTROLYTES BEFORE SUBJECTING SAID AQUEOUS SOLUTION TO ELECTRODIALYSIS.
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |