US2988463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying sugar solutions
Assignee: Individual
•
Filing: 1958-03-20
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Granted: 1961-06-13
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Expires: 1978-03-20
Abstract
No abstract record available.
Inventors
- 👤 Vajna Sandor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:23
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A METHOD OF PURIFYING SUGAR-CONTAINING SOLUTIONS, THE STEPS OF SUBJECTING A SUGAR-CONTAINING SOLUTION TO ION EXCHANGE IN A CATION EXCHANGER IN WHICH ALKALI CATIONS CONTAINED IN SAID SOLUTION ARE REMOVED THEREFROM IN EXCHANGE FOR AMMONIUM IONS, REGENERATING SAID CATION EXCHANGER WITH AMMONIUM CARBONATE SO AS TO FORM A SOLUTION OF AN ALKALI METAL CARBONATE, SUBJECTING THE SUGAR AND AMMONIUM IONS CONTAINING SOLUTION FORMED IN SAID CATION EXCHANGER TO ION EXCHANGE IN A STRONGLY BASIC ANION EXCHANGER, CAUSTICIZING SAID SOLUTION OF ALKALI METAL CARBONATE FORMED BY REGENERATION OF SAID CATION EXCHANGER SO AS TO TRANSFORM THE SAME INTO A SOLUTION OF ALKALI METAL HYDROXIDE, REGENERATING SAID STRONGLY BASIC ANION EXCHANGER WITH THE THUS-FORMED SOLUTION OF ALKALI METAL HYDROXIDE, AND BLOWING OFF AMMONIUM HYDROXIDE FORMED IN SAID ANION EXCHANGER.
Claim 2
Dependent Claim
128 words
IN A METHOD OF PURIFYING SUGAR-CONTAINING SOLUTIONS, THE STEPS OF SUBJECTING A SUGAR-CONTAINING SOLUTION TO ION EXCHANGE IN A CATION EXCHANGER IN WHICH ALKALI CATIONS CONTAINED IN SAID SOLUTION ARE REMOVED THEREFROM IN EXCHANGE FOR AMMONIUM IONS, REGENERATING SAID CATION EXCHANGER WITH AMMONIUM CARBONATE SO AS TO FORM A SOLUTION OF AN ALKALI METAL CARBONATE, SUBJECTING THE SUGAR AND AMMONIUM IONS CONTAINING SOLUTION FORMED IN SAID CATION EXCHANGER TO ION EXCHANGE IN A STRONGLY BASIC ANION EXCHANGER, CAUSTICIZING SAID SOLUTION OF ALKALI METAL CARBONATE FORMED BY REGENERATION OF SAID CATION EXCHANGER SO AS TO TRANSFORM THE SAME INTO A SOLUTION OF ALKALI METAL HYDROXIDE, REGENERATING SAID STRONGLY BASIC ANION EXCHANGER WITH THE THUS-FORMED SOLUTION OF ALKALI METAL HYDROXIDE, AND BLOWING OFF AMMONIUM HYDROXIDE FORMED IN SAID ANION EXCHANGER.
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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |