US3842068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
8-epi-erythromycins
Assignee: Abbott Laboratories
•
Filing: 1972-06-15
•
Granted: 1974-10-15
•
Expires: 1992-06-15
Abstract
Abstract 1. AN ERYTHROMYCIN DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF 8-EPI-10,11-ANHYDROETHYTHROMYCN B, 8-EPI11, 12-EPOXYERYTHROMYCIN A 6,9-HEMIACETAL, 8-EPI-ERYTHROMYCIN B AND 8-EPI-10,11-ANHYDROERYTHROMYCIN A.
Inventors
- 👤 J Tadanier
- 👤 J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:41
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AN ERYTHROMYCIN DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF 8-EPI-10,11-ANHYDROETHYTHROMYCN B, 8-EPI11, 12-EPOXYERYTHROMYCIN A 6,9-HEMIACETAL, 8-EPI-ERYTHROMYCIN B AND 8-EPI-10,11-ANHYDROERYTHROMYCIN A.
Claim 2
Dependent Claim
20 words
AN ERYTHROMYCIN DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF 8-EPI-10,11-ANHYDROETHYTHROMYCN B, 8-EPI11, 12-EPOXYERYTHROMYCIN A 6,9-HEMIACETAL, 8-EPI-ERYTHROMYCIN B AND 8-EPI-10,11-ANHYDROERYTHROMYCIN A.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |