US3067067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch fractionation
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1960-01-13
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Granted: 1962-12-04
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Expires: 1980-01-13
Abstract
No abstract record available.
Inventors
- 👤 Oliver R Etheridge
- 👤 John A Wagoner
- 👤 John W Mcdonald
- 👤 Lippincott Dorothy Ann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF FRACTIONATING STARCH THAT COMPRISES FORMING A FLUID SOLUTION CONSISTING ESSENTIALLY OF STARCH IN WATER BY HEATING IT ABOVE ABOUT 250*F., THE TEMPERATURE AND TIME OF HEATING BEING LIMITED TO AVOID SUBSTANTIAL DEGRADATION OF THE STARCH, COOLING SAID SOLUTION BELOW THE ATMOSPHERIC BOILING POINT AND ABOVE ABOUT 120*F., THE CONCENTRATION OF THE STARCH DRY SUBSTANCE IN SAID COOLED SOLUTION BEING MORE THAN ABOUT 2.5% BY WEIGHT, MAINTAINING SAID SOLUTION WITHIN THE TEMPERATURE RANGE BETWEEN ABOUT 120*F. AND THE ATMOSPHERIC BOILING POINT FOR A PERIOD TO STABILIZE SAID SOLUTION AND TO FORM AND GROW A SEPARABLE AMYLOSE-RICH SOLID FRACTION THEREIN AND SEPARATING SAID FRACTION FROM THE STABLE SOLUTION.
Claim 2
Independent Claim
109 words
THE METHOD OF FRACTIONATING STARCH THAT COMPRISES FORMING A FLUID SOLUTION CONSISTING ESSENTIALLY OF STARCH IN WATER BY HEATING IT ABOVE ABOUT 250*F., THE TEMPERATURE AND TIME OF HEATING BEING LIMITED TO AVOID SUBSTANTIAL DEGRADATION OF THE STARCH, COOLING SAID SOLUTION BELOW THE ATMOSPHERIC BOILING POINT AND ABOVE ABOUT 120*F., THE CONCENTRATION OF THE STARCH DRY SUBSTANCE IN SAID COOLED SOLUTION BEING MORE THAN ABOUT 2.5% BY WEIGHT, MAINTAINING SAID SOLUTION WITHIN THE TEMPERATURE RANGE BETWEEN ABOUT 120*F. AND THE ATMOSPHERIC BOILING POINT FOR A PERIOD TO STABILIZE SAID SOLUTION AND TO FORM AND GROW A SEPARABLE AMYLOSE-RICH SOLID FRACTION THEREIN AND SEPARATING SAID FRACTION FROM THE STABLE SOLUTION.
References Cited (Backward Citations)
US2633436A
Cited
US2871146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |