US2606847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of dextrose
Assignee: Corn Products Refining Co
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Filing: 1949-08-06
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Granted: 1952-08-12
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Expires: 1969-08-06
Abstract
No abstract record available.
Inventors
- 👤 William B Newkirk
- 👤 Arthur D Hapke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
C; C13; C13K; C13K1/00; C13K1/06; C13K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A PROCESS FOR OBTAINING CRYSTALLINE DEXTROSE FROM A LIQUOR RESULTING FROM THE ACID CONVERSION OF STARCH WHICH INCLUDES THE PRELIMINARY STEPS OF ADJUSTING THE PH OF SAID LIQUOR TO WITHIN THE RANGE OF FROM ABOUT 3.9 TO 5.5 AND REMOVING THE COLLOID MATERIAL THEREFROM; THE IMPROVEMENT OF SUBSEQUENTLY TREATING THE LIQUOR OBTAINED FROM SAID PRELIMINARY STEPS WHICH CONSISTS OF PASSING SAID LIQUOR THROUGH CATION AND ANION EXCHANGE RESINS TO DE-MINERALIZE AND REFINE THE LIQUOR; PASSING THE EFFLUENT LIQUOR OVER ACTIVATED CARBON FOR FINAL DECOLORIZATION OF THE LIQUOR; THEREAFTER CONCENTRATING THE DECOLORIZED LIQUOR AND SUBJECTING THE CONCENTRATED LIQUOR TO CRYSTALLIZATION; PURGING THE MASSECUITE OF ITS MOTHER LIQUOR; MIXING THE MOTHER LIQUOR WITH FRESH STARCH AND CONVERTING THE MIXTURE; AND THEREAFTER SUBJECTING THE RESULTANT LIQUOR TO SAID PRELIMINARY STEPS AND TO SAID SUBSEQUENT TREATMENT BEFORE CRYSTALLIZATION WHEREBY SUBSTANTIALLY ALL OF THE DEXTROSE PRESENT IN SAID LIQUOR IS RECOVERED IN PURE CRYSTALLINE FORM.
Claim 2
Dependent Claim
151 words
IN A PROCESS FOR OBTAINING CRYSTALLINE DEXTROSE FROM A LIQUOR RESULTING FROM THE ACID CONVERSION OF STARCH WHICH INCLUDES THE PRELIMINARY STEPS OF ADJUSTING THE PH OF SAID LIQUOR TO WITHIN THE RANGE OF FROM ABOUT 3.9 TO 5.5 AND REMOVING THE COLLOID MATERIAL THEREFROM; THE IMPROVEMENT OF SUBSEQUENTLY TREATING THE LIQUOR OBTAINED FROM SAID PRELIMINARY STEPS WHICH CONSISTS OF PASSING SAID LIQUOR THROUGH CATION AND ANION EXCHANGE RESINS TO DE-MINERALIZE AND REFINE THE LIQUOR; PASSING THE EFFLUENT LIQUOR OVER ACTIVATED CARBON FOR FINAL DECOLORIZATION OF THE LIQUOR; THEREAFTER CONCENTRATING THE DECOLORIZED LIQUOR AND SUBJECTING THE CONCENTRATED LIQUOR TO CRYSTALLIZATION; PURGING THE MASSECUITE OF ITS MOTHER LIQUOR; MIXING THE MOTHER LIQUOR WITH FRESH STARCH AND CONVERTING THE MIXTURE; AND THEREAFTER SUBJECTING THE RESULTANT LIQUOR TO SAID PRELIMINARY STEPS AND TO SAID SUBSEQUENT TREATMENT BEFORE CRYSTALLIZATION WHEREBY SUBSTANTIALLY ALL OF THE DEXTROSE PRESENT IN SAID LIQUOR IS RECOVERED IN PURE CRYSTALLINE FORM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |