US3196151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 7-aminocephalosporanic acid
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1960-11-08
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Granted: 1965-07-20
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Expires: 1980-11-08
Abstract
No abstract record available.
Inventors
- 👤 John R E Hoover
- 👤 James W Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:10
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS HAVING THE STRUCTURAL 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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |