Patent US3218318A successfully refreshed from Google Patents.
US3218318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
7-heterocyclic-substituted-acylamido cephalosporins
Assignee: Eli Lilly and Co
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Filing: 1962-08-31
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Granted: 1965-11-16
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24; C07D501/26; C07D501/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
11 words
THE ANTIBIOTIC SUBSTANCES OF THE CLASS REPRESENTED BY THE FOLLOWING FORMULA
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |