US3812010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fructose and glucose from sucrose
Assignee: Laevosan GmbH and Co KG
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Filing: 1971-08-04
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Granted: 1974-05-21
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Expires: 1991-08-04
Abstract
Abstract METHOD FOR PRODUCING FRUCTOSE AND GLUCOSE FROM A MIXTURE THEREOF IN A MINERAL ACID-FREE AQUEOUS SOLUTION. WATER IS EVAPORATED FROM SAID SOLUTION AT A TEMPERATURE BETWEEN 50* C. AND 120*C. A LOW BOILING POINT ALCOHOL IS ADDED TO SAID SOLUTION, AND GLUCOSE AND FRUCTOSE THEN PRECIPITATED. THE WATER CONTENT OF SAID SOLUTION IS NOT GREATER THAN 1% WHEN FRUSTOSE IS PRECIPITATED THEREFROM. THE INVENTION ALSO INCLUDES A METHOD OF PEPARING SAID MIXTURE IN SAID SOLUTION FROM SUCROSE BY CONVERSION THEREOF TO INVERT SUGAR.
Inventors
- 👤 E Nitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:57
CPC Classifications
C; C13; C13K; C13K3/00; C13K13/00; C13K13/007
Claims Analysis
Total Claims: 0
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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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |