Patent US2743268A successfully refreshed from Google Patents.
US2743268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erythromycin-penicillin
Assignee: Eli Lilly and Co
•
Filing: 1952-07-12
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Granted: 1956-04-24
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Expires: 1972-07-12
Abstract
No abstract record available.
Inventors
- 👤 Mary A Stieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
THE ERYTHROMYCIN SALT PENICILLIN.
Claim 2
Dependent Claim
4 words
THE ERYTHROMYCIN SALT PENICILLIN.
References Cited (Backward Citations)
US2565653A
Cited
US2515898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |