US3560489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
7-alpha-aminoacyl cephalosporins
Assignee: Eli Lilly and Co
•
Filing: 1966-08-12
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Granted: 1971-02-02
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Expires: 1986-08-12
Abstract
Abstract CERTAIN SUBSTITUTED 7-A-AMINOACYL CEPHALOSPORINS, PREPARED BY THE ACYLATION OF 7-AMINOCEPHALOSPORANIC ACID, HAVING HIGH ANTIBIOTIC ACTIVITY.
Inventors
- 👤 Robert B Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |