US3860577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoazetidinoneacetic acid esters
Assignee: Eli Lilly and Co
•
Filing: 1972-07-20
•
Granted: 1975-01-14
•
Expires: 1992-07-20
Abstract
Abstract AND PROCESS FOR THEIR PREPARATION IN WHICH A PENICILLIN ESTER IS REACTED WITH A SOURCE OF POSITIVE HALOGEN TO SELECTIVELY OPEN THE THIAZOLIDINE NUCLEUS OF THE Novel beta-lactam compounds of the formula
Inventors
- 👤 Stjepan Kukolja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
C; C07; C07D; C07D205/00; C07D205/02; C07D205/06; C07D205/08; A; A61; A61P; A61P31/00; A61P31/04; C07D205/085; C07D205/09; C07D205/095; C07D499/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3799938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |