Patent US2772207A successfully refreshed from Google Patents.
US2772207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycerol manufacture
Assignee: Individual
•
Filing: 1953-11-09
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Granted: 1956-11-27
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Expires: 1973-11-09
Abstract
No abstract record available.
Inventors
- 👤 Edward M Frankel
- 👤 Samuel L Goldheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:36
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/18; C12P7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
METHOD OF MANUFACTURING GLYCEROL BY FERMENTATION WHICH COMPRISES FERMENTING AN AQUEOUS SUGAR SOLUTION WITH YEAST IN THE PRESENCE OF SODIUM SULPHITE-BISULPHITE, SEPARATING THE YEAST CELLS FROM THE FERMENTED LIQUID, EVAPORATING ETHANOL AND ACETALDEHYDE FROM THE YEAST-FREED LIQUID TO OBTAIN A RESIDUAL SOLUTION CONTAINING GLYCEROL AND SODIUM SULPHITE, PASSING SAID SOLUTION THROUGH A POLAR ION EXCLUDING MATERIAL WHEREBY THE GLYCEROL IS RETAINED IN SAID ION EXCLUDING MATERIAL AND THE SODIUM SULPHITE-BISULPHITE EMERGES WITH THE EFFLUENT, AND WASHING THE AFORESAID MATERIAL THEREBY TO OBTAINED A SOLUTION OF GLYCEROL IN HIGH PURITY.
Claim 2
Dependent Claim
89 words
METHOD OF MANUFACTURING GLYCEROL BY FERMENTATION WHICH COMPRISES FERMENTING AN AQUEOUS SUGAR SOLUTION WITH YEAST IN THE PRESENCE OF SODIUM SULPHITE-BISULPHITE, SEPARATING THE YEAST CELLS FROM THE FERMENTED LIQUID, EVAPORATING ETHANOL AND ACETALDEHYDE FROM THE YEAST-FREED LIQUID TO OBTAIN A RESIDUAL SOLUTION CONTAINING GLYCEROL AND SODIUM SULPHITE, PASSING SAID SOLUTION THROUGH A POLAR ION EXCLUDING MATERIAL WHEREBY THE GLYCEROL IS RETAINED IN SAID ION EXCLUDING MATERIAL AND THE SODIUM SULPHITE-BISULPHITE EMERGES WITH THE EFFLUENT, AND WASHING THE AFORESAID MATERIAL THEREBY TO OBTAINED A SOLUTION OF GLYCEROL IN HIGH PURITY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |