US2567747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of enzyme preparations
Assignee: Wallerstein Co Inc
•
Filing: 1948-03-18
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Granted: 1951-09-11
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Expires: 1968-03-18
Abstract
No abstract record available.
Inventors
- 👤 Wallerstein Leo
- 👤 Pfannmuller Julius
- 👤 Noe Alfons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:00
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2408; C12N9/2411; C12N9/2414; C12N9/2417; C12N9/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A STABILIZED ENZYMATIC COMPOSITION COMPRISING AN AMYLOLYTIC ENZYME AND A SUBSTANCE OF THE GROUP CONSISTING OF THIOFORMAMIDE AND SUBSTITUTION PRODUCTS THEREOF IN AN AMOUNT RANGING FROM 0.1% TO 1.0% BY WEIGHT AND BEING EFFECTIVE TO STABILIZE THE ENZYME.
Claim 2
Dependent Claim
38 words
A STABILIZED ENZYMATIC COMPOSITION COMPRISING AN AMYLOLYTIC ENZYME AND A SUBSTANCE OF THE GROUP CONSISTING OF THIOFORMAMIDE AND SUBSTITUTION PRODUCTS THEREOF IN AN AMOUNT RANGING FROM 0.1% TO 1.0% BY WEIGHT AND BEING EFFECTIVE TO STABILIZE THE ENZYME.
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) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |