US3794635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-heteroarylidene erythromycyclamines
Assignee: Lilly Industries Ltd
•
Filing: 1971-09-27
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Granted: 1974-02-26
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Expires: 1991-09-27
Abstract
Abstract DERIVATIVES OF ERYTHROMYCYL A AMINE, ERYTHROMYCYL B AMINE AND EPI ISOMERS THEREOF FORMED BY REACTION OF THE AMINE WITH HETEROARYL ALDEHYDES ARE USEFUL AS ANTIBIOTICS AND AMOEBICIDAL AGENTS.
Inventors
- 👤 D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:23
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |