US3798127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium for the culture of the escherichia coli strain
Assignee: FAB DE ANTIBIOTICE IASI
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Filing: 1972-06-20
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Granted: 1974-03-19
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Expires: 1992-06-20
Abstract
Abstract THE INVENTION RELATES TO A MEDIUM FOR THE CULTURE OF THE ESCHERICHIA COLI STRAIN, WHICH IS A PRODUCER OF PENCILLINACYLASE (PENICILLIAMIDASE), A PENICILLIN-SPLITTING ENZYME. THIS MEDIUM CONTAINS UREA IN AN AMOUNT OF 0.1 TO 1% BY WEIGHT AS A NITROGEN SOURCE AND LECCITHIN IN AN AMOUNT OF 0.01 TO 0.05% BY WEIGHT AS A PROMOTER OF THE PROCESS FOR FORMATION OF THE PENCILLINACYLASE ENZYMME.
Inventors
- 👤 M Dogariu
- 👤 T Cobzariu
- 👤 L Ionescu
- 👤 G Friedman
- 👤 E Grumeza
- 👤 G Alupei
- 👤 M Verdes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:35
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/78; C12N9/80; C12N9/84; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |