Patent US3576719A successfully refreshed from Google Patents.
US3576719A
Expired / Lapsed
US
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Alkaline proteinase
Assignee: ER Squibb and Sons LLC
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Filing: 1968-04-23
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Granted: 1971-04-27
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Expires: 1988-04-23
Abstract
Abstract THIS INVENTION RELATES TO A NEW ALKALINE PROTEINASE PRODUCED BY A STRAIN OF BACILLUS SUBTILIS. THE NEW PROTEINASE HAS A HIGH ACTIVITY OPTIMUM (PH 11.0) AND ALSO A HIGH TEMPERATURE TOLERANCE. THIS MATERIAL IS OBTAINED IN SOLUTION IN THE EXTRACELLULAR FLUID OF A BROTH CULTURE OF THE MICROORGANISM AND MAY BE ISOLATED IN CRYSTALLINE FORM BY RELATIVELY SIMPLE CRYSTALLIZATION PROCEDURES. IT IS USEFUL, FOR EXAMPLE, FOR DISRUPTING PROTEIN BONDS UNDER A VARIETY OF CONDITIONS.
Inventors
- 👤 Sawao Murao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/52; C12N9/54; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/816; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |