US2606870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for conditioning liquids
Assignee: Permutit Co
•
Filing: 1946-08-16
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Granted: 1952-08-12
•
Expires: 1966-08-16
Abstract
No abstract record available.
Inventors
- 👤 Pemberton Roland Thomas
- 👤 Holmes Eric Leighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:14
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/05; B01J49/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS OF REMOVING WEAK ACIDS FROM WATER CONTAINING BOTH STRONG AND WEAK ACIDS WHICH COMPRISES FLOWING SUCH WATER FIRST THROUGH ONE BED OF ANION EXCHANGER AND THEN WITHOUT ANY FURTHER ION EXCHANGER TREATMENT THROUGH ANOTHER BED OF ANION EXCHANGER, REGENERATING THE FIRST BED BEFORE SUBSTANTIAL QUANTITIES OF STRONG ACID APPEAR IN THE EFFLUENT THEREFROM, AND REGENERATING THE SECOND BED WITH A SOLUTION OF AN ALKALINE HYDROXIDE BEFORE SUBSTANTIAL QUANTITIES OF WEAK ACIDS APPEAR IN THE EFFLUENT THEREFROM.
Claim 2
Dependent Claim
78 words
A PROCESS OF REMOVING WEAK ACIDS FROM WATER CONTAINING BOTH STRONG AND WEAK ACIDS WHICH COMPRISES FLOWING SUCH WATER FIRST THROUGH ONE BED OF ANION EXCHANGER AND THEN WITHOUT ANY FURTHER ION EXCHANGER TREATMENT THROUGH ANOTHER BED OF ANION EXCHANGER, REGENERATING THE FIRST BED BEFORE SUBSTANTIAL QUANTITIES OF STRONG ACID APPEAR IN THE EFFLUENT THEREFROM, AND REGENERATING THE SECOND BED WITH A SOLUTION OF AN ALKALINE HYDROXIDE BEFORE SUBSTANTIAL QUANTITIES OF WEAK ACIDS APPEAR IN THE EFFLUENT THEREFROM.
References Cited (Backward Citations)
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US2287284A
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Cited
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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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |