US3682842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized enzymic compositions containing protease and alpha amylase of bacterial origin and method of stabilizing such compositions
Assignee: Individual
•
Filing: 1970-05-04
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Granted: 1972-08-08
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Expires: 1990-05-04
Abstract
Abstract AN ENZYMIC COMPOSITION OF PROTEASE AND ALPHA AMYLASE OF BACTERIAL ORIGIN IS STABILIZED AGAINST THE LOSS OF ACTIVITY IN THE PRESENCE OF WATER BY COMBINING THE ENZYMES WITH A LESS THAN STOICHIOMETRIC QUANTITY OF AN ENZYME-ION BINDING AGENT; AND THE SHELF LIFE OF THE STABILIZED ENZYMIC COMPOSITION IS PROLONGED BY ADDING THERETO, IN NON-PRECIPITATING QUANTITIES, SALT AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ORGANIC SOLVENT AND ANIONIC DETERGENT.
Inventors
- 👤 Irving Innerfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:08
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38663; C11D3/38618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |