US2503053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of starch
Assignee: Corn Products Refining Co
•
Filing: 1945-12-13
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Granted: 1950-04-04
•
Expires: 1965-12-13
Abstract
No abstract record available.
Inventors
- 👤 Kerr Ralph Waldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:38
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF MODIFYING STARCH WHICH COMPRISES CONTACTING STARCH WITH ALUMINUM CHLORIDE HEXAHYDRATE AT STARCH TEMPERATURES BETWEEN ABOUT 20*C. AND ABOUT 105*C., SAID ALUMINUM CHLORIDE HEXAHYDRATE RANGING IN AMOUNT FROM ABOUT 0.05 PERCENT TO ABOUT 0.5 PERCENT, BASED UPON THE DRY WEIGHT OF THE STARCH, SAID STARCH UNDERGOING MODIFICATION CONTAINING MOISTURE RANGING IN AMOUNT FROM ABOUT 1-2 PERCENT TO ABOUT 20 PERCENT OF THE TOTAL WEIGHT OF STARCH AND MOISTURE, THE PH VALVE OF SAID STARCH UNDERGOING MODIFICATION RANGING FROM ABOUT 2.8 TO ABOUT 3.4.
Claim 2
Dependent Claim
85 words
THE PROCESS OF MODIFYING STARCH WHICH COMPRISES CONTACTING STARCH WITH ALUMINUM CHLORIDE HEXAHYDRATE AT STARCH TEMPERATURES BETWEEN ABOUT 20*C. AND ABOUT 105*C., SAID ALUMINUM CHLORIDE HEXAHYDRATE RANGING IN AMOUNT FROM ABOUT 0.05 PERCENT TO ABOUT 0.5 PERCENT, BASED UPON THE DRY WEIGHT OF THE STARCH, SAID STARCH UNDERGOING MODIFICATION CONTAINING MOISTURE RANGING IN AMOUNT FROM ABOUT 1-2 PERCENT TO ABOUT 20 PERCENT OF THE TOTAL WEIGHT OF STARCH AND MOISTURE, THE PH VALVE OF SAID STARCH UNDERGOING MODIFICATION RANGING FROM ABOUT 2.8 TO ABOUT 3.4.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |