US3293175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange processes
Assignee: Individual
•
Filing: 1963-02-19
•
Granted: 1966-12-20
•
Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Popper Karel
- 👤 Slamecka Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/02; B01J47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN AN ION EXCHANGE CYCLE CARRIED OUT WITH A BED OF ANION AND CATION EXCHANGE MATERIAL LOCATED IN A COLUMN HAVING VALVE CONTROLLED EXIT MEANS, WHEREIN DURING ONE STAGE OF THE CYCLE A SPARINGLY SOLUBLE ALKALINE EARTH METAL COMPOUND IS FORMED, THE IMPROVEMENT WHICH COMPRISES REGENERATING SAID BED OF ANION AND CATION EXCHANGE MATERIAL BY RETAINING SAID SPARINGLY SOLUBLE ALKALINE EARTH METAL COMPOUND WITHIN THE CONFINES OF THE COLUMN, AND FLUSHING SAID COMPOUND THROUGH SAID COLUMN WITH WATER WHILE THE VALVE OF THE EXIT MEANS IS CLOSED TO CAUSE THE CATIONS AND THE ANIONS OF SAID COMPOUNDS TO REGENERATE THE ACTIVE SITES OF SAID ANION AND CATION EXCHANGE MATERIAL, RESPECTIVELY.
Claim 2
Dependent Claim
110 words
IN AN ION EXCHANGE CYCLE CARRIED OUT WITH A BED OF ANION AND CATION EXCHANGE MATERIAL LOCATED IN A COLUMN HAVING VALVE CONTROLLED EXIT MEANS, WHEREIN DURING ONE STAGE OF THE CYCLE A SPARINGLY SOLUBLE ALKALINE EARTH METAL COMPOUND IS FORMED, THE IMPROVEMENT WHICH COMPRISES REGENERATING SAID BED OF ANION AND CATION EXCHANGE MATERIAL BY RETAINING SAID SPARINGLY SOLUBLE ALKALINE EARTH METAL COMPOUND WITHIN THE CONFINES OF THE COLUMN, AND FLUSHING SAID COMPOUND THROUGH SAID COLUMN WITH WATER WHILE THE VALVE OF THE EXIT MEANS IS CLOSED TO CAUSE THE CATIONS AND THE ANIONS OF SAID COMPOUNDS TO REGENERATE THE ACTIVE SITES OF SAID ANION AND CATION EXCHANGE MATERIAL, RESPECTIVELY.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |