US3044906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of fructose from glucose using a cation exchange resin salt
Assignee: Dow Chemical Co
•
Filing: 1960-02-15
•
Granted: 1962-07-17
•
Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Lefevre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
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
88 words
A METHOD FOR SEPARATING FRUCTOSE FROM AN AQUEOUS SOLUTION OF FRUCTOSE AND GLUCOSE WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH A SALT OF A NUCLEARLY-SULFONATED STYRENE CATION EXCHANGE RESIN CROSSLINKED IN MOLECULAR STRUCTURE TO AN EXTENT RENDERING THE SULFONATED RESIN INSOLUBLE IN AQUEOUS SOLUTIONS OF ACIDS, BASES AND SALTS WHEREBY FRUCTOSE AND GLUCOSE ARE ABSORBED BY SAID CATION EXCHANGE RESIN SALT, SEPARATING THE LOADED RESIN FROM THE REMAINING AQUEOUS SOLUTION AND ELUTING SAID LOADED RESIN WITH WATER TO REMOVE THE GLUCOSE AND FRUCTOSE IN SUCCESSIVE FRACTIONS OF ELUATE.
Claim 2
Independent Claim
88 words
A METHOD FOR SEPARATING FRUCTOSE FROM AN AQUEOUS SOLUTION OF FRUCTOSE AND GLUCOSE WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH A SALT OF A NUCLEARLY-SULFONATED STYRENE CATION EXCHANGE RESIN CROSSLINKED IN MOLECULAR STRUCTURE TO AN EXTENT RENDERING THE SULFONATED RESIN INSOLUBLE IN AQUEOUS SOLUTIONS OF ACIDS, BASES AND SALTS WHEREBY FRUCTOSE AND GLUCOSE ARE ABSORBED BY SAID CATION EXCHANGE RESIN SALT, SEPARATING THE LOADED RESIN FROM THE REMAINING AQUEOUS SOLUTION AND ELUTING SAID LOADED RESIN WITH WATER TO REMOVE THE GLUCOSE AND FRUCTOSE IN SUCCESSIVE FRACTIONS OF ELUATE.
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 |