US3637656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of starch derivatives
Assignee: Unilever Bestfoods North America
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Filing: 1968-10-28
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Granted: 1972-01-25
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Expires: 1988-10-28
Abstract
Abstract STARCH DERIVATIVES ARE PRODUCED WITHOUT THE USE OF GELRETARDING SALTS BY FORMING A MXTURE OF 10-40 PERCENT BY WEIGHT STARCH IN WATER, ADDING TO THE MIXTURE, A REAGENT, AND DERIVATIZING THE STARCH BY REACTING IT WITH THE REAGENT AT TEMPERATURES BETWEEN ABOUT 225*-400* F. THE DERIVATIZATION REACTION EFFECTED, IS SUBSTANTIALLY HOMOGENEOUS AND MAY BE CARRIED OUT IN A CONTINUOUS PROCESS IF DESIRED.
Inventors
- 👤 Felix Joseph Germino
- 👤 Joseph Ronald Caracci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:07
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/08; C08B31/12; C08B31/125
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |