Patent US3660376A successfully refreshed from Google Patents.
US3660376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-arylidene erythromycylamines
Assignee: Eli Lilly and Co
•
Filing: 1970-09-30
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Granted: 1972-05-02
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Expires: 1990-09-30
Abstract
Abstract N-ARYLIDENE DERIVATIVES OF ERYTHROMYCYLAMINE AND OF ERYTHROMYCYL B AMINE HAVING IMPROVED ORAL ACTIVITY WITH CONCOMITANT DECREASE IN SIDE EFFECTS.
Inventors
- 👤 Eddie H Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:34
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |