US2531999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of crystalline dextrose
Assignee: Wallerstein Co Inc
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Filing: 1947-10-13
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Granted: 1950-11-28
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Expires: 1967-10-13
Abstract
No abstract record available.
Inventors
- 👤 Wallerstein Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:06
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/842; Y10S435/911; Y10S435/913; Y10S435/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF MAKING CRYSTALLINE DEXTROSE WHICH COMPRISES SUBJECTING AN AQUEOUS DISPERSION OF A SUBSTANCE OF THE GROUP CONSISTING OF STARCHES AND CONVERSION PRODUCTS THEREOF TO THE ACTION OF A MICROBIOLOGICAL ENZYME PREPARATION HAVING STARCH-GLUCOGENASE ACTIVITY EQUIVALENT TO AN INITIAL REACITON VALUE "K" OF AT LEAST 1.0 TO CONVERT A SUBSTANTIAL PROPORTION OF THE SUBSTANCE OF DEXTROSE, MAINTAINING THE PRODUCT THUS OBTAINED AT CRYSTALLIZING TEMPERATURE UNTIL A SUBSTANTIAL PROPORTION OF DISCRETE DEXTROSE CRYSTALS HAVE FORMED, AND SEPARATING THE DEXTROSE CRYSTALS FROM THE MOTHER LIQUOR.
Claim 2
Independent Claim
84 words
A METHOD OF MAKING CRYSTALLINE DEXTROSE WHICH COMPRISES SUBJECTING AN AQUEOUS DISPERSION OF A SUBSTANCE OF THE GROUP CONSISTING OF STARCHES AND CONVERSION PRODUCTS THEREOF TO THE ACTION OF A MICROBIOLOGICAL ENZYME PREPARATION HAVING STARCH-GLUCOGENASE ACTIVITY EQUIVALENT TO AN INITIAL REACITON VALUE "K" OF AT LEAST 1.0 TO CONVERT A SUBSTANTIAL PROPORTION OF THE SUBSTANCE OF DEXTROSE, MAINTAINING THE PRODUCT THUS OBTAINED AT CRYSTALLIZING TEMPERATURE UNTIL A SUBSTANTIAL PROPORTION OF DISCRETE DEXTROSE CRYSTALS HAVE FORMED, AND SEPARATING THE DEXTROSE CRYSTALS FROM THE MOTHER LIQUOR.
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) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |