US2783167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for simultaneously gelatinizing and catalytically modifying starch suspensions
Assignee: National Cylinder Gas Co
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Filing: 1953-08-10
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Granted: 1957-02-26
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Expires: 1973-08-10
Abstract
No abstract record available.
Inventors
- 👤 Dewey D Lineberry
- 👤 George W Reigel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR SIMULTANEOUSLY MODIFYING AND GELATINIZING AN AQUEOUS SUSPENSION OF STARCH WHICH COMPRISES EFFECTING SOLUTION IN SAID SUSPENSION OF A SOLUBLE ZINC SALT IN SUCH AMOUNT AS TO PRODUCE A ZINC CONCENTRATION OF AT LEAST ABOUT ONE QUARTER GRAM OF ZINC PER GALLON OF AQUEOUS MEDIUM, THE ZINC SALT IONIZING TO PRODUCE POSITIVELY A TEMPERATURE BETWEEN ABOUT 250* F., AND ABOUT 310* F., HOLDING THE SUSPENSION ABOVE 250* F. FOR SUFFICIENT TIME TO PERMIT GELATINIZATION OF THE STARCH GRANULES AND TO ALLOW THE ZINC IONS TO EFFECT DEPOLYMERIZATION OF THE STARCH MOLECULES, AND SUBJECTING THE SUSPENSION TO SUPERATMOSPHERIC PRESSURE DURING THE HEATING AND HOLDING TIMES.
Claim 2
Dependent Claim
106 words
A PROCESS FOR SIMULTANEOUSLY MODIFYING AND GELATINIZING AN AQUEOUS SUSPENSION OF STARCH WHICH COMPRISES EFFECTING SOLUTION IN SAID SUSPENSION OF A SOLUBLE ZINC SALT IN SUCH AMOUNT AS TO PRODUCE A ZINC CONCENTRATION OF AT LEAST ABOUT ONE QUARTER GRAM OF ZINC PER GALLON OF AQUEOUS MEDIUM, THE ZINC SALT IONIZING TO PRODUCE POSITIVELY A TEMPERATURE BETWEEN ABOUT 250* F., AND ABOUT 310* F., HOLDING THE SUSPENSION ABOVE 250* F. FOR SUFFICIENT TIME TO PERMIT GELATINIZATION OF THE STARCH GRANULES AND TO ALLOW THE ZINC IONS TO EFFECT DEPOLYMERIZATION OF THE STARCH MOLECULES, AND SUBJECTING THE SUSPENSION TO SUPERATMOSPHERIC PRESSURE DURING THE HEATING AND HOLDING TIMES.
References Cited (Backward Citations)
GB190925121A
Cited
US1284495A
Cited
US1661201A
Cited
AT135000B
Cited
US2198785A
Cited
US2481436A
Cited
US2619428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |