US2935509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of starch derivatives containing nitrogen
Assignee: Unilever Bestfoods North America
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Filing: 1956-08-21
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Granted: 1960-05-03
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Expires: 1976-08-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Paschall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:03
CPC Classifications
C; C08; C08B; C08B31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PREPARING STARCH CARBAMATES WHICH CONSISTS IN SLURRYING STARCH AND A NITROGEN COMPOUND IN WATER, DEWATERING THE SLURRY TO PRODUCE A STARCH MIXTURE AND DRYING THE STARCH MIXTURE TO FROM ABOUT 5 TO ABOUT 12 PERCENT MOISTURE CONTENT WITHOUT GELATINIZING THE STARCH AND THEREAFTER HEATING SAID DRIED MIXTURE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 90* TO 110*C., SAID NITROGEN COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
67 words
A PROCESS FOR PREPARING STARCH CARBAMATES WHICH CONSISTS IN SLURRYING STARCH AND A NITROGEN COMPOUND IN WATER, DEWATERING THE SLURRY TO PRODUCE A STARCH MIXTURE AND DRYING THE STARCH MIXTURE TO FROM ABOUT 5 TO ABOUT 12 PERCENT MOISTURE CONTENT WITHOUT GELATINIZING THE STARCH AND THEREAFTER HEATING SAID DRIED MIXTURE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 90* TO 110*C., SAID NITROGEN COMPOUND HAVING THE FORMULA
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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |