Patent US2539397A successfully refreshed from Google Patents.
US2539397A
Expired / Lapsed
US
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Purification of sugar solutions
Assignee: National Cylinder Gas Co
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Filing: 1947-03-26
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Granted: 1951-01-30
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Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 Bottoms Robert Roger
- 👤 Ernest E Pittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:08
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
THE METHOD OF PRODUCING WHITE SUGAR FROM CANE JUICE, WHICH INCLUDES CLARIFYING THE JUICE, CONCENTRATING THE JUICE TO A SYRUP HAVING A DENSITY OF FROM 40* TO 60* BRIX, ADDING TO THE HOT SYRUP FROM ABOUT 0.1% TO ABOUT 0.5% OF FINELY DIVIDED, HIGHLY ALKALINE HYDRATED CALCIUM SILICATE HAVING A RATIO OF SIO2 TO CAO OF NOT LESS THAN ABOUT 3 TO 1, HEATING TO 75* C. TO 120* C. TO PRECIPITATE COLLOIDAL AND COLOR FORMING MATERIALS, REMOVING RESIDUAL COLOR FORMING MATERIALS BY THE ACTION OF ACTIVATED DECOLORIZING CARBON, AND FILTERING.
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) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |