US3706746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-desacetyl derivatives of 7-n-acylamino-cephalosphoranic acids
Assignee: Novartis Corp
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Filing: 1969-10-20
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Granted: 1972-12-19
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Expires: 1989-10-20
Abstract
Abstract 7-N-OCYL - O- DESACETYL - O - N - SUBSTITUTED-CARBAMOYLAMINOCEPHALOSPORANIC ACIDS IN WHICH ACYL IS THE RADICAL OF A CYCLICALLY SUBSTITUTED LOWER ALKANECARBOXYLIC ACID CARRYING A FREE AMINO GROUP LINKED WITH A CARBON ATOM OF ALIPHATIC CHARACTER. USE: ANTIBIOTICS.
Inventors
- 👤 Rolf Bosshardt
- 👤 Bruno Fechtig
- 👤 Johannes Mueller
- 👤 Heinrich Peter
- 👤 Hans Bickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:52
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24; C07D501/26; C07D501/32; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |