US3755588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillanic acid in dosage unit form
Assignee: Leo Pharma AS
•
Filing: 1970-11-04
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Granted: 1973-08-28
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Expires: 1990-11-04
Abstract
Abstract THE INVENTION RELATES TO A PHARMACEUTICAL COMPOSITION IN DOSAGE-UNIT FORM FOR USE IN THE TREATMENT OF INFECTIOUS DISEASES AND COMPRISING, AS AN ACTIVE INGREDIENT, THE HITHERTO UNKNOWN 6-(HEXAHYDRO-1H-AZEPIN-1-YL)-METHYLENEAMINO)-PENICILLANIC ACID OR A DERIVATIVE THEREOF OF THE FORMULA: 6-((HEXAHYDRO-1H-AZEPIN-1-YL)-CH=N-),2-(R-OOC-),3,3-DI- (CH3-)PENAM WHEREIN R IS HYDROGEN OR A-CH2OCO-A GROUP, WHEREIN A IS ALIPHATIC GROUP OF FROM 1 TO 6 CARBON ATOMS, OR A PHARMACEUTICALLY ACCEPTABLE SALT OF SUCH ACID OR ESTER, THE QUANTITY OF THE ACTIVE INGREDIENT IN A DOSE BEING FROM 25 TO 1000 MG. CALCULATED AS THE FREE ACID.
Inventors
- 👤 F Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
C; C07; C07D; C07D499/00
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |