US2606098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkali metal hydroxides by exchange of ions
Assignee: Dow Chemical Co
•
Filing: 1948-12-29
•
Granted: 1952-08-05
•
Expires: 1968-12-29
Abstract
No abstract record available.
Inventors
- 👤 William C Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF MAKING AN ALKALI METAL HYDROXIDE WHICH COMPRISES, TREATING A WATER-INSOLUBLE STRONGLY BASIC ANION EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM HYDROXIDE RADICALS, EACH OF WHICH QUATERNARY AMMONIUM HYDROXIDE RADICALS HAS ITS HYDROXYL GROUP ATTACHED TO THE NITROGEN ATOM THEREOF, WITH A STREAM OF AN AQUEOUS SOLUTION OF AN ALKALI METAL HALIDE OF AT LEAST 10 PER CENT CONCENTRATION TO EFFECT DISPLACEMENT OF THE HYDROXYL IONS WITH FORMATION OF ALKALI METAL HYDROXIDE SOLUTION CONTAINING THE ALKALI METAL HYDROXIDE IN CONCENTRATION OF AT LEAST 5 PER CENT BY WEIGHT.
Claim 2
Independent Claim
88 words
A METHOD OF MAKING AN ALKALI METAL HYDROXIDE WHICH COMPRISES, TREATING A WATER-INSOLUBLE STRONGLY BASIC ANION EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM HYDROXIDE RADICALS, EACH OF WHICH QUATERNARY AMMONIUM HYDROXIDE RADICALS HAS ITS HYDROXYL GROUP ATTACHED TO THE NITROGEN ATOM THEREOF, WITH A STREAM OF AN AQUEOUS SOLUTION OF AN ALKALI METAL HALIDE OF AT LEAST 10 PER CENT CONCENTRATION TO EFFECT DISPLACEMENT OF THE HYDROXYL IONS WITH FORMATION OF ALKALI METAL HYDROXIDE SOLUTION CONTAINING THE ALKALI METAL HYDROXIDE IN CONCENTRATION OF AT LEAST 5 PER CENT BY WEIGHT.
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) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |