Patent US3291702A successfully refreshed from Google Patents.
US3291702A
Expired / Lapsed
US
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Enzymatic conversion of starch containing proteinaceous substances to dextrose
Assignee: Commercial Solvents Corp
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Filing: 1964-04-13
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Granted: 1966-12-13
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Guido M Miescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:41
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/20; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN THE ENZYMATIC CONVERSION OF STARCH CONTAINING PROTEINACEOUS SUBSTANCES TO GLUCOSE WHEREIN AN AQUEOUS SLURRY OF THE STARCH IS HEATED WITH AN ENZYME HAVING ALPHA-AMYLASE ACTIVITY TO THIN THE STARCH, THE RESULTING MIXTURE HEATED WITH AN ENZYME HAVING AMYLOGLUCOSIDASE ACTIVITY TO CONVERT AND SACCHARIFY THE THINNED SLURRY TO PRODUCE AN ENZYMOLYSATE OF GLUCOSE AND THE ENZYMOLYSATE FILTERED AND WHEREIN THE PROTEINACOUS SUBSTANCES IN THE STARCH ARE PRESENT AS CONTAMINANTS IN CONCENTRATIONS. WHICH MAKE FILTERING OF THE ENZYMOLYSATE DIFFICULT, THE IMPROVEMENT WHICH COMPRISES HEATING SAID STARCH BEFORE FORMATION OF SAID AQUEOUS SLURRY AND PRIOR TO BOTH ENZYMATIC CONVERSIONS AT A TEMPERATURE OF ABOUT 110* TO 130* C. FOR AT LEAST ABOUT 0.5 HOUR TO FACILITATE SAID FILTERING.
Claim 2
Dependent Claim
116 words
IN THE ENZYMATIC CONVERSION OF STARCH CONTAINING PROTEINACEOUS SUBSTANCES TO GLUCOSE WHEREIN AN AQUEOUS SLURRY OF THE STARCH IS HEATED WITH AN ENZYME HAVING ALPHA-AMYLASE ACTIVITY TO THIN THE STARCH, THE RESULTING MIXTURE HEATED WITH AN ENZYME HAVING AMYLOGLUCOSIDASE ACTIVITY TO CONVERT AND SACCHARIFY THE THINNED SLURRY TO PRODUCE AN ENZYMOLYSATE OF GLUCOSE AND THE ENZYMOLYSATE FILTERED AND WHEREIN THE PROTEINACOUS SUBSTANCES IN THE STARCH ARE PRESENT AS CONTAMINANTS IN CONCENTRATIONS. WHICH MAKE FILTERING OF THE ENZYMOLYSATE DIFFICULT, THE IMPROVEMENT WHICH COMPRISES HEATING SAID STARCH BEFORE FORMATION OF SAID AQUEOUS SLURRY AND PRIOR TO BOTH ENZYMATIC CONVERSIONS AT A TEMPERATURE OF ABOUT 110* TO 130* C. FOR AT LEAST ABOUT 0.5 HOUR TO FACILITATE SAID FILTERING.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |