US3528965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin ester process and products
Assignee: Beecham Group PLC
•
Filing: 1968-02-09
•
Granted: 1970-09-15
•
Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Martin Cole
- 👤 Frank Peter Doyle
- 👤 Maurice John Soulal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
CPC Classifications
C; C07; C07D; C07D499/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/824; Y10S435/829; Y10S435/848; Y10S435/849; Y10S435/873; Y10S435/874
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3399207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |