Patent US3558601A successfully refreshed from Google Patents.
US3558601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillins and their preparation
Assignee: AstraZeneca AB
•
Filing: 1967-12-04
•
Granted: 1971-01-26
•
Expires: 1987-12-04
Abstract
Abstract A NEW CLASS OF PENICILLINS IN WHICH THE SIDE CHAIN CONTAINS A PHOSPHINYLAMINO OR PHOSPHINOLHIOLYLAMINO GROUP. THE COMPOUNDS ARE ANTIMICROBIALLY ACTIVE. METHODS OF SYNTHESIS ARE DESCRIBED.
Inventors
- 👤 Bertil Ake Ekstrom
- 👤 Olof Harald Sjoberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:33
CPC Classifications
C; C07; C07D; C07D499/00; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6561; C07F9/65611
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |