US2549840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation and fractionation of sugars
Assignee: Individual
•
Filing: 1949-07-29
•
Granted: 1951-04-24
•
Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Edna M Montgomery
- 👤 Francis B Weakley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE PROCESS WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION CONTAINING GLUCOSE AND POLYSACCHARIDES WITH ACTIVATED CARBON WHEREBY THE POLYSACCHARDIE SUGARS ARE REMOVED FROM THE SOLUTION BY RELATIVELY STRONG ADSORPTION UPON THE CARBON, SUBSEQUENTLY DISPLACING LESS STRONGLY ADSORBED GLUCOSE WITH WATER, RECOVERING THE THUS PURIFIED GLUCOSE SOLUTION, DISPLACING THE ADSORBED POLYSACCHARIDES FROM THE CARBON BY ELUTING WITH ONE OF THE GROUP CONSISTING OF PHENOL, ACETIC ACID AND EPHEDRINE IN 0.2 TO 10 PERCENT AQUEOUS SOLUTION, AND RECOVERING THE DISPLACED POLYSACCHARIDE SOLUTION.
Claim 2
Dependent Claim
79 words
THE PROCESS WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION CONTAINING GLUCOSE AND POLYSACCHARIDES WITH ACTIVATED CARBON WHEREBY THE POLYSACCHARDIE SUGARS ARE REMOVED FROM THE SOLUTION BY RELATIVELY STRONG ADSORPTION UPON THE CARBON, SUBSEQUENTLY DISPLACING LESS STRONGLY ADSORBED GLUCOSE WITH WATER, RECOVERING THE THUS PURIFIED GLUCOSE SOLUTION, DISPLACING THE ADSORBED POLYSACCHARIDES FROM THE CARBON BY ELUTING WITH ONE OF THE GROUP CONSISTING OF PHENOL, ACETIC ACID AND EPHEDRINE IN 0.2 TO 10 PERCENT AQUEOUS SOLUTION, AND RECOVERING THE DISPLACED POLYSACCHARIDE SOLUTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |