Patent US355806A successfully refreshed from Google Patents.
Patent US2016473A successfully refreshed from Google Patents.
Patent US3258461A successfully refreshed from Google Patents.
US3258461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of cephalosporin c and related compounds and a method of the synthesis thereof
Assignee: Glaxo Laboratories Ltd
•
Filing: 1963-09-16
•
Granted: 1966-06-28
•
Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Cocker John Derek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:25
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24; C07D501/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A COMPOUND SELECTED FROM COMPOUNDS 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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |