US2884310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkali metal hydroxides by ion exchange
Assignee: Veolia WTS Systems USA Inc
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Filing: 1957-01-07
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Granted: 1959-04-28
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Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Norman W Rosenberg
- 👤 William E Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF MAKING AN ALKALI METAL HYDROXIDE FROM AN ALKALINE EARTH HYDROXIDE AND AN ALKALI METAL SALT BY EXCHANGE OF IONS WHICH COMPRISES , PASSING AN AQUEOUS STREAM INTO CONTACT WITH A WATER-INSOLUBLE ANION EXCHANGE RESIN IN INTIMATE CONTACT WITH SOLID ALKALINE EARTH HYDROXIDE, AND THEREAFTER TREATING THE ANION EXCHANGE RESIN WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL SALT TO EFFECT DISPLACEMENT OF THE ABSORBED HYDROXYL IONS WITH FORMATION OF ALKALI METAL HYDROXIDE AND WITHDRAWING THE LATTER IN SOLUTION AS AN EFFLUENT PRODUCT.
Claim 2
Independent Claim
85 words
A METHOD OF MAKING AN ALKALI METAL HYDROXIDE FROM AN ALKALINE EARTH HYDROXIDE AND AN ALKALI METAL SALT BY EXCHANGE OF IONS WHICH COMPRISES , PASSING AN AQUEOUS STREAM INTO CONTACT WITH A WATER-INSOLUBLE ANION EXCHANGE RESIN IN INTIMATE CONTACT WITH SOLID ALKALINE EARTH HYDROXIDE, AND THEREAFTER TREATING THE ANION EXCHANGE RESIN WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL SALT TO EFFECT DISPLACEMENT OF THE ABSORBED HYDROXYL IONS WITH FORMATION OF ALKALI METAL HYDROXIDE AND WITHDRAWING THE LATTER IN SOLUTION AS AN EFFLUENT PRODUCT.
References Cited (Backward Citations)
US2606098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |