US3687728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline buffer for granular starch modification reaction
Assignee: Cerestar USA Inc
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Filing: 1970-11-02
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Granted: 1972-08-29
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Expires: 1990-11-02
Abstract
Abstract PROCESS OF MODIFYING UNGELATINIZED STARCH WHICH INCLUDES ADDING A WATER SOLUBLE ALKALI METAL SALT OF AN AMPHOTERIC METAL COMPOUND TO AN AQUEOUS STARCH SLURRY TO ACHIEVE A PH IN THE RANGE OF 9 TO 12.5. THE PROCESS IS CONDUCTED AT TEMPERATURES BELOW THE GELATINIZATION TEMPERATURE OF THE STARCH.
Inventors
- 👤 Anangur V Subbaratnam
- 👤 Eugene L Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12; C08B31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |