US3044904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of dextrose and levulose
Assignee: Central Aguirre Sugar Co
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Filing: 1960-02-15
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Granted: 1962-07-17
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Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Gonzalo R Serbia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14; C13B20/148; B; B01; B01J; B01J39/00; B01J39/26; C13K; C13K13/00; C13K13/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR SEPARATING FROM ONE ANOTHER DEXTROSE AND LEVULOSE, WHICH COMPRISES FEEDING TO A WATER IMMERSED BED OF THE CALCIUM SALT OF A NUCLEARLY SULFONATED STYRENE CATION EXCHANGE RESIN CONTAINING A CROSS-LINKING AGENT, AN AQUEOUS SOLUTION OF DEXTROSE AND LEVULOSE, THUS DISPLACING WATER FROM THE RESIN, THEREAFTER FEEDING WATER TO THE BED DISPLACE A FURTHER AMOUNT OF LIQUID FROM THE BED, AND COLLECTING SUCCESSIVE FRACTIONS OF THE DISPLACED EFFLUENT LIQUID, WHEREBY THERE IS OBTAINED A FRACTION OF THE EFFLUENT LIQUID WHICH CONTAINS DEXTROSE AS ITS MAJOR SUGAR CONSTITUENT FRACTION OF THE EFFLUENT LIQUID WHICH CONTAINS LEVULOSE AS ITS MAJOR SUGAR CONSTITUENT.
Claim 2
Independent Claim
102 words
A METHOD FOR SEPARATING FROM ONE ANOTHER DEXTROSE AND LEVULOSE, WHICH COMPRISES FEEDING TO A WATER IMMERSED BED OF THE CALCIUM SALT OF A NUCLEARLY SULFONATED STYRENE CATION EXCHANGE RESIN CONTAINING A CROSS-LINKING AGENT, AN AQUEOUS SOLUTION OF DEXTROSE AND LEVULOSE, THUS DISPLACING WATER FROM THE RESIN, THEREAFTER FEEDING WATER TO THE BED DISPLACE A FURTHER AMOUNT OF LIQUID FROM THE BED, AND COLLECTING SUCCESSIVE FRACTIONS OF THE DISPLACED EFFLUENT LIQUID, WHEREBY THERE IS OBTAINED A FRACTION OF THE EFFLUENT LIQUID WHICH CONTAINS DEXTROSE AS ITS MAJOR SUGAR CONSTITUENT FRACTION OF THE EFFLUENT LIQUID WHICH CONTAINS LEVULOSE AS ITS MAJOR SUGAR CONSTITUENT.
References Cited (Backward Citations)
US2890972A
Cited
US2868677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |