US2948716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of sugar esters
Assignee: Individual
•
Filing: 1956-04-12
•
Granted: 1960-08-09
•
Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Trevor C M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:01
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
THE METHOD OF PREPARING A SUGAR MONOESTER IN PURIFIED FROM FROM A MIXTURE OF SUGAR, SUGAR MONOESTERS AND FATTY IMPURITIES COMPRISING REDUCING THE MIXTURE TO A FORM IN WHICH THE SUGAR IS SUBSTANTIALLY IN A NON-CRYSTALLINE STATE, ADDING A HEATED SOLVENT WHICH PRECIPITATES THE SUGAR CONTENT WHILE DISSOLVING THE SUGAR MONOESTER AND SAID FATTY IMPURITIES, SEPARATING THE PRECIPITATED SUGAR FROM THE HOT SOLUTION, COOLING THE SOLUTION TO CAUSE PRECIPITATION OF THE DESIRED SUGAR MONOESTER, AND THEN SEPARATING THE PRECIPITATED SUGAR MONOESTER FROM THE COOLED SOLUTION CONTAINING THE SAID FATTY IMPURITIES.
References Cited (Backward Citations)
US2714541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |