Patent US2565404A successfully refreshed from Google Patents.
US2565404A
Expired / Lapsed
US
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Starch conversion process
Assignee: Blattmann and Co AG
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Filing: 1947-03-29
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Granted: 1951-08-21
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Expires: 1967-03-29
Abstract
No abstract record available.
Inventors
- 👤 Max A Staerkle
- 👤 Meier Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12; C13; C13K; C13K1/00; C13K1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR CONVERTING STARCH INTO HYDROLYZED STARCH PRODUCTS, WHEREIN A COMMERCIALLY DRY TO MOIST MASS OF ACIDULATED STARCH SOLIDS IS HEATED AND STIRRED IN AN ENCLOSED REACTION SPACE AT A TEMPERATURE SUFFICIENT TO SACCHARIFY THE STARCH UNTIL A DESIRED DEGREE OF SACCHARIFICATION HAS BEEN PRODUCED, WHICH COMPRISES MAINTAINING THE MASS WHILE IT IS BEING HEATED DURING AT LEAST A PERIOD OF PRELIMINARY HYDROLYSIS UNDER A COUNTERPRESSURE FROM AN EXTERNALLY APPLIED GAS SUFFICIENT TO PREVENT VAPORIZATION OF WATER PRESENT IN THE MATERIAL, AND INJECTING LIVE STEAM INTO THE PRE-HYDROLYZED MASS AT ABOUT THE STAGE WHEN IT TENDS TO STIFFEN SO AS ACCELERATE THE HEATING AND SACCHARIFICATION.
Claim 2
Dependent Claim
106 words
A PROCESS FOR CONVERTING STARCH INTO HYDROLYZED STARCH PRODUCTS, WHEREIN A COMMERCIALLY DRY TO MOIST MASS OF ACIDULATED STARCH SOLIDS IS HEATED AND STIRRED IN AN ENCLOSED REACTION SPACE AT A TEMPERATURE SUFFICIENT TO SACCHARIFY THE STARCH UNTIL A DESIRED DEGREE OF SACCHARIFICATION HAS BEEN PRODUCED, WHICH COMPRISES MAINTAINING THE MASS WHILE IT IS BEING HEATED DURING AT LEAST A PERIOD OF PRELIMINARY HYDROLYSIS UNDER A COUNTERPRESSURE FROM AN EXTERNALLY APPLIED GAS SUFFICIENT TO PREVENT VAPORIZATION OF WATER PRESENT IN THE MATERIAL, AND INJECTING LIVE STEAM INTO THE PRE-HYDROLYZED MASS AT ABOUT THE STAGE WHEN IT TENDS TO STIFFEN SO AS ACCELERATE THE HEATING AND SACCHARIFICATION.
References Cited (Backward Citations)
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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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |