Patent US3137592A successfully refreshed from Google Patents.
US3137592A
Expired / Lapsed
US
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Gelatinized starch products
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1961-04-03
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Granted: 1964-06-16
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Protzman
- 👤 John A Wagoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:39
CPC Classifications
C; C08; C08B; C08B31/00; C08B30/00; C08B30/12; C08B30/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF PREPARING A HOMOGENEOUS GELATINIZED STARCH PRODUCT THAT COMPRISES FORMING A HOT FLUID HOMOGENEOUS MASS OF STARCH RAW MATERIAL AND STARCH-SWELLING AGENT AT ELEVATED TEMPERATURE AND PRESSURE BY WORKING A MIXTURE OF STARCH RAW MATERIAL AND STARCH-SWELLING AGENT IN A CONFINING CHAMBER FOR ABOUT 0.5 TO ABOUT 5 MINUTES AT TEMPERATURE OF ABOUT 125*-250*C. AND PRESSURE SUBSTANTIALLY ABOVE AUTOGENOUS VAPOR PRESSURE OF THE MIXTURE, AND IMMEDIATELY THEREAFTER TRANSFERRING THE MATERIAL INTO A ZONE OF SUBSTANTIALLY LOWER PRESSURE AN TEMPERATURE, THE PROPORTION OF STARCH-SWELLING AGENT RANGING FROM ABOUT 22% TO ABOUT 67% BY WEIGHT OF THE STARCH RAW MATERIAL DRY SUBSTANCE, AND THE WORKING BEING SUFFICIENT TO PROVIDE AN ADIABATIC TEMPERATURE RISE OF AT LEAST 50*C. IN THE WORKED MASS.
Claim 2
Independent Claim
121 words
THE METHOD OF PREPARING A HOMOGENEOUS GELATINIZED STARCH PRODUCT THAT COMPRISES FORMING A HOT FLUID HOMOGENEOUS MASS OF STARCH RAW MATERIAL AND STARCH-SWELLING AGENT AT ELEVATED TEMPERATURE AND PRESSURE BY WORKING A MIXTURE OF STARCH RAW MATERIAL AND STARCH-SWELLING AGENT IN A CONFINING CHAMBER FOR ABOUT 0.5 TO ABOUT 5 MINUTES AT TEMPERATURE OF ABOUT 125*-250*C. AND PRESSURE SUBSTANTIALLY ABOVE AUTOGENOUS VAPOR PRESSURE OF THE MIXTURE, AND IMMEDIATELY THEREAFTER TRANSFERRING THE MATERIAL INTO A ZONE OF SUBSTANTIALLY LOWER PRESSURE AN TEMPERATURE, THE PROPORTION OF STARCH-SWELLING AGENT RANGING FROM ABOUT 22% TO ABOUT 67% BY WEIGHT OF THE STARCH RAW MATERIAL DRY SUBSTANCE, AND THE WORKING BEING SUFFICIENT TO PROVIDE AN ADIABATIC TEMPERATURE RISE OF AT LEAST 50*C. IN THE WORKED MASS.
References Cited (Backward Citations)
US2105052A
Cited
US2417969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |