US2515095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of fractionating starch
Assignee: Corn Products Refining Co
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Filing: 1947-05-15
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Granted: 1950-07-11
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Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Schoch Thomas John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE PROCESS OF FRACTIONATING STARCH INTO ITS A- AND B-FRACTIONS WHICH COMPRISES EFFECTING A SOLUTION OF STARCH, AT ELEVATED TEMPERATURE, IN A MIXTURE OF WATER AND ALIPHATIC ALCOHOL, COOLING THE SOLUTION TO A SUFFICIENTLY LOW TEMPERATURE TO EFFECT PRECIPITATION OF THE A-FRACTION, SEPARATING THE A-FRACTION, COOLING THE SOLUTION REMAINING AFTER REMOVAL OF A-FRACTION TO A SUFFICIENTLY LOW TEMPERATURE TO EFFECT PRECIPITATION OF THE B-FRACTION AND SEPARATING THE B-FRACTION; SAID ALCOHOL CONTAINING FROM 1 TO 5 ATOMS OF CARBON AND CAPABLE OF BEING DISSOLVED IN THE AQUEOUS PHASE OF SAID MIXTURE TO THE EXTENT OF ABOUT 10 TO 15 VOLUME PERCENT AT 0*C. AND BEING PRESENT IN THE SYSTEM TO THE EXTENT OF ABOUT 10 TO ABOUT 35 PERCENT OF THE VOLUME OF SAID MIXTURE; THE CONCENTRATION OF STARCH IN SAID SOLUTION NOT EXCEEDING ABOUT 7 PERCENT.
Claim 2
Dependent Claim
136 words
THE PROCESS OF FRACTIONATING STARCH INTO ITS A- AND B-FRACTIONS WHICH COMPRISES EFFECTING A SOLUTION OF STARCH, AT ELEVATED TEMPERATURE, IN A MIXTURE OF WATER AND ALIPHATIC ALCOHOL, COOLING THE SOLUTION TO A SUFFICIENTLY LOW TEMPERATURE TO EFFECT PRECIPITATION OF THE A-FRACTION, SEPARATING THE A-FRACTION, COOLING THE SOLUTION REMAINING AFTER REMOVAL OF A-FRACTION TO A SUFFICIENTLY LOW TEMPERATURE TO EFFECT PRECIPITATION OF THE B-FRACTION AND SEPARATING THE B-FRACTION; SAID ALCOHOL CONTAINING FROM 1 TO 5 ATOMS OF CARBON AND CAPABLE OF BEING DISSOLVED IN THE AQUEOUS PHASE OF SAID MIXTURE TO THE EXTENT OF ABOUT 10 TO 15 VOLUME PERCENT AT 0*C. AND BEING PRESENT IN THE SYSTEM TO THE EXTENT OF ABOUT 10 TO ABOUT 35 PERCENT OF THE VOLUME OF SAID MIXTURE; THE CONCENTRATION OF STARCH IN SAID SOLUTION NOT EXCEEDING ABOUT 7 PERCENT.
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |