US3575864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized protease of bacterial origin and method of stabilizing such protease
Assignee: Individual
•
Filing: 1969-04-17
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Granted: 1971-04-20
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Expires: 1989-04-17
Abstract
Abstract A PROTEASE OF BACTERIAL ORIGIN IS STABILIZED AGAINST THE LOSS OF PROTEOLYTIC ACTIVITY IN THE PRESENCE OF WATER BY COMBINING THE PROTEASE WITH A LESS THAN STOICHIOMETRIC QUANTITY OF AN ENZYME-ION BINDING AGENT TO PROLONG THE SHELF LIFE OF THE ENZYMIC COMPOSITION, AND ACCOMPANYING SAID COMBINATION WITH AT LEAST TWO MEMBERS OF THE GROUP CONSISITING OF SALT, PROTEIN, ORGANIC SOLVENT AND DETERGENT IN A NON-PRECIPITATING QUANTITY.
Inventors
- 👤 Irving Innerfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:47
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/96; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38618; C11D3/38663
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |