Patent US3896844A successfully refreshed from Google Patents.
US2715601A
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Lactase enzyme preparation
Assignee: NAT DAIRY RES LAB Inc
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Filing: 1953-06-17
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Granted: 1955-08-16
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Expires: 1973-06-17
Abstract
No abstract record available.
Inventors
- 👤 Elliott R Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:19
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2468; C12N9/2471; C12N9/78; C12N9/86; C12Y; C12Y302/00; C12Y302/01; C12Y302/01023; C12Y305/00; C12Y305/02; C12Y305/02006; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/94; Y10S435/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR THE RECOVERY OF AN IMPROVED LACTASEACTIVE, ZYMASE-INACTIVE ENZYME PREPARATION WHICH COMPRISES TREATING A LACTASE-ACTIVE YEAST OF A LACTASE-PRODUCING STRAIN WITH ETHYL ALCOHOL IN AN AMOUNT RANGING FROM ABOUT 1.5 TO ABOUT 3.6 TIMES THE WEIGHT OF YEAST SOLIDS UNTIL A SUBSTANTIAL PROPORTION OF THE VIABLE ORGANISMS HAVE BEEN KILLED AND DRYING THE YEAST TO RECOVER A LACTASE-ACTIVE, ZYMASE-INACTIVE PRODUCT.
Claim 2
Dependent Claim
62 words
A PROCESS FOR THE RECOVERY OF AN IMPROVED LACTASEACTIVE, ZYMASE-INACTIVE ENZYME PREPARATION WHICH COMPRISES TREATING A LACTASE-ACTIVE YEAST OF A LACTASE-PRODUCING STRAIN WITH ETHYL ALCOHOL IN AN AMOUNT RANGING FROM ABOUT 1.5 TO ABOUT 3.6 TIMES THE WEIGHT OF YEAST SOLIDS UNTIL A SUBSTANTIAL PROPORTION OF THE VIABLE ORGANISMS HAVE BEEN KILLED AND DRYING THE YEAST TO RECOVER A LACTASE-ACTIVE, ZYMASE-INACTIVE PRODUCT.
References Cited (Backward Citations)
GB474822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |