US2583451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dextrose
Assignee: Wallerstein Co Inc
•
Filing: 1948-04-12
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Granted: 1952-01-22
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Expires: 1968-04-12
Abstract
No abstract record available.
Inventors
- 👤 Wallerstein Leo
- 👤 Philip P Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF MAKING DEXTROSE WHICH COMPRISES SUBJECTING AN AQUEOUS SUSPENSION OF RAW STARCH TO THE ACTION OF MICROBIOLOGICAL ENZYME MATERIAL HAVING AMYLOLYTIC ACTIVITY EQUIVALENT TO AT LEAST 200 SKB UNITS PER 100 GRAMS OF STARCH, AND STARCH-GLUCOGENASE ACTIVITY EQUIVALENT TO AN INITIAL REACTION VALUE "K" OF AT LEAST 0.005 PER 100 GRAMS OF STARCH TO CONVERT A SUBSTANTIAL PROPORTION OF THE STARCH TO DEXTROSE.
Claim 2
Independent Claim
65 words
A METHOD OF MAKING DEXTROSE WHICH COMPRISES SUBJECTING AN AQUEOUS SUSPENSION OF RAW STARCH TO THE ACTION OF MICROBIOLOGICAL ENZYME MATERIAL HAVING AMYLOLYTIC ACTIVITY EQUIVALENT TO AT LEAST 200 SKB UNITS PER 100 GRAMS OF STARCH, AND STARCH-GLUCOGENASE ACTIVITY EQUIVALENT TO AN INITIAL REACTION VALUE "K" OF AT LEAST 0.005 PER 100 GRAMS OF STARCH TO CONVERT A SUBSTANTIAL PROPORTION OF THE STARCH TO DEXTROSE.
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) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |