US3436310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolysis of the acetoxymethyl group at the 3-position of the cephalosporin nucleus
Assignee: Glaxo Laboratories Ltd
•
Filing: 1965-10-23
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Granted: 1969-04-01
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Harry Arnold
- 👤 Norman Haddow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:51
CPC Classifications
C; C12; C12P; C12P35/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/878
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |