Patent US2937959A successfully refreshed from Google Patents.
US2937959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of sugar solutions by molecular exclusion
Assignee: Illinois Water Treatment Co
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Filing: 1958-10-23
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Granted: 1960-05-24
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Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 August C Reents
- 👤 Harold W Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:04
CPC Classifications
C; C13; C13B; C13B35/00; C13B35/02; C13B35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE METHOD OF PURIFYING A CLARIFIED SUGAR SOLUTION SUCH AS MOLASSES CONTAINING HIGHLY IONIZED SALTS HAVING MONOVALENT ADD DIVALENT CATIONS WHICH INCLUDES THE STEPS OF PASSING THE SOLUTION THROUGH A COLUMN OF CATION EXCHANGE RESIN HAVING A MONOVALENT ALKALI METAL AS THE REPLACEABLE ION WHEREBY TO REMOVE SAID DIVALENT IONS FROM THE SOLUTION, PASSING THE TREATED SOLUTION THROUGH A BED OF CATION EXCHANGE RESIN PARTICLES HAVING A MONOVALENT ALKALI METAL ION IN THE REPLACEABLE POSITION AND CAPABLE OF ADSORBING THE SUGAR IN THE SOLUTION WHILE EXCLUDING IONIZABLE SALTS, THEREAFTER FEEDING WATER THROUGH SAID BED, AND DIVIDING THE EFFLUENT INTO A FIRST FRACTION IN WHICH SAID EXCLUDED SALTS CONSTITUTE A MAJOR PORTION OF THE TOTAL SOLIDS, A SECOND FRACTION CONTAINING BOTH THE EXCLUDED SALTS AND PART OF THE SUGAR, AND A THIRD FRACTION IN WHICH SUGAR CONSTITUTES A MAJOR PORTION OF THE TOTAL SOLIDS.
Claim 2
Independent Claim
143 words
THE METHOD OF PURIFYING A CLARIFIED SUGAR SOLUTION SUCH AS MOLASSES CONTAINING HIGHLY IONIZED SALTS HAVING MONOVALENT ADD DIVALENT CATIONS WHICH INCLUDES THE STEPS OF PASSING THE SOLUTION THROUGH A COLUMN OF CATION EXCHANGE RESIN HAVING A MONOVALENT ALKALI METAL AS THE REPLACEABLE ION WHEREBY TO REMOVE SAID DIVALENT IONS FROM THE SOLUTION, PASSING THE TREATED SOLUTION THROUGH A BED OF CATION EXCHANGE RESIN PARTICLES HAVING A MONOVALENT ALKALI METAL ION IN THE REPLACEABLE POSITION AND CAPABLE OF ADSORBING THE SUGAR IN THE SOLUTION WHILE EXCLUDING IONIZABLE SALTS, THEREAFTER FEEDING WATER THROUGH SAID BED, AND DIVIDING THE EFFLUENT INTO A FIRST FRACTION IN WHICH SAID EXCLUDED SALTS CONSTITUTE A MAJOR PORTION OF THE TOTAL SOLIDS, A SECOND FRACTION CONTAINING BOTH THE EXCLUDED SALTS AND PART OF THE SUGAR, AND A THIRD FRACTION IN WHICH SUGAR CONSTITUTES A MAJOR PORTION OF THE TOTAL SOLIDS.
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |