US3374115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch dispersions
Assignee: Cerestar USA Inc
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Filing: 1964-06-24
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Granted: 1968-03-19
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Frank Ernest
- 👤 Naoyuki H Yui
- 👤 Anthony A Silvasi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:49
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A METHOD OF MAKING COOKED STARCH DISPERSIONS OF UNIFORM REDUCED VISCOSITY WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF STARCH GRANULES, BUFFERING THE PH OF SAID SLURRY TO A VALUE WITHIN THE RANGE FROM ABOUT 3.0 TO ABOUT 5.0 HEATING SAID SLURRY TO A TEMPERATURE FROM ABOUT 212*F. TO 375*F. AND MAINTAINING SAID SLURRY AT THE ELEVATED TEMPERATURE FOR FROM ABOUT 2 TO ABOUT 90 MINUTES UNTIL A COOKED STARCH DISPERSION OF DESIRED VISCOSITY HAS FORMED.
Claim 2
Independent Claim
75 words
A METHOD OF MAKING COOKED STARCH DISPERSIONS OF UNIFORM REDUCED VISCOSITY WHICH COMPRISES FORMING AN AQUEOUS SLURRY OF STARCH GRANULES, BUFFERING THE PH OF SAID SLURRY TO A VALUE WITHIN THE RANGE FROM ABOUT 3.0 TO ABOUT 5.0 HEATING SAID SLURRY TO A TEMPERATURE FROM ABOUT 212*F. TO 375*F. AND MAINTAINING SAID SLURRY AT THE ELEVATED TEMPERATURE FOR FROM ABOUT 2 TO ABOUT 90 MINUTES UNTIL A COOKED STARCH DISPERSION OF DESIRED VISCOSITY HAS FORMED.
Claim 3
Dependent Claim
124 words
A BUFFERED STARCH COMPOSITION ADAPTED TO BE SLURRIED AND COOKED IN WATER TO FORM IMPROVED STARCH DISPERSIONS OF UNIFORM REDUCED VISCOSITY WHICH COMPRISES PARTICULATE STARCH IN ADMIXTURE WITH BUFFER MATERIALS IN THE ABSENCE OF QUANTITIES OF WATER WHICH FORM A LIQUID SLURRY OF THE ADMIXTURE, SAID BUFFER MATERIALS BEING OTHER THAN STRONG MINERAL ACIDS AND BEING PRESENT IN AN AMOUNT EFFECTIVE TO PROVIDE A SLURRY PH FROM ABOUT 3.0 TO ABOUT 5.0 AND CONTROL OF SAID SLURRY PH WITHIN PLUS OR MINUS 0.2 PH UNIT WHEN SAID ADMIXTURE IS SLURRIED IN WATER, SAID ADMIXTURE YIELDING SAID IMPROVED STARCH DISPERSIONS UPON COOKING OF A SLURRY OF SAID ADMIXTURE AT A TEMPERATURE FROM ABOUT 212*F. TO ABOUT 375*F. FOR FROM ABOUT 2 TO ABOUT 90 MINUTES.
Claim 4
Dependent Claim
124 words
A BUFFERED STARCH COMPOSITION ADAPTED TO BE SLURRIED AND COOKED IN WATER TO FORM IMPROVED STARCH DISPERSIONS OF UNIFORM REDUCED VISCOSITY WHICH COMPRISES PARTICULATE STARCH IN ADMIXTURE WITH BUFFER MATERIALS IN THE ABSENCE OF QUANTITIES OF WATER WHICH FORM A LIQUID SLURRY OF THE ADMIXTURE, SAID BUFFER MATERIALS BEING OTHER THAN STRONG MINERAL ACIDS AND BEING PRESENT IN AN AMOUNT EFFECTIVE TO PROVIDE A SLURRY PH FROM ABOUT 3.0 TO ABOUT 5.0 AND CONTROL OF SAID SLURRY PH WITHIN PLUS OR MINUS 0.2 PH UNIT WHEN SAID ADMIXTURE IS SLURRIED IN WATER, SAID ADMIXTURE YIELDING SAID IMPROVED STARCH DISPERSIONS UPON COOKING OF A SLURRY OF SAID ADMIXTURE AT A TEMPERATURE FROM ABOUT 212*F. TO ABOUT 375*F. FOR FROM ABOUT 2 TO ABOUT 90 MINUTES.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |