US3071576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic penicillins
Assignee: Beecham Research Laboratories Ltd
•
Filing: 1960-11-08
•
Granted: 1963-01-01
•
Expires: 1980-11-08
Abstract
No abstract record available.
Inventors
- 👤 Doyle Frank Peter
- 👤 Nayler John Herbert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ACID HAVING THE FORMULA
References Cited (Backward Citations)
BE569728A
Cited
US2941995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |