US3488730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of cephalosporin antibiotics
Assignee: Eli Lilly and Co
•
Filing: 1966-09-08
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Granted: 1970-01-06
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Verlin C Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:26
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54; A61K31/542; A61K31/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
CEPHALOSPORIN SALTS OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF TRANS-1,3- AND TRANS-1,4-CYCLOHEXANEBIS(ALKYLENEAMINE) IN WHICH ALKYLENE HAS FROM 1 TO 3 CARBON ATOMS, 1,3-AND 1,4-XYLENE-ALPHA, ALPHA''-DIAMINE, AND TRANS-1,3-AND TRANS 1,4-CYCLOHEXANEDIAMINE AND A CEPHALOSPORANIC ACID OF THE FORMULA:
Claim 2
Dependent Claim
38 words
CEPHALOSPORIN SALTS OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF TRANS-1,3- AND TRANS-1,4-CYCLOHEXANEBIS(ALKYLENEAMINE) IN WHICH ALKYLENE HAS FROM 1 TO 3 CARBON ATOMS, 1,3-AND 1,4-XYLENE-ALPHA, ALPHA''-DIAMINE, AND TRANS-1,3-AND TRANS 1,4-CYCLOHEXANEDIAMINE AND A CEPHALOSPORANIC ACID OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |