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Patent US3250679A successfully refreshed from Google Patents.
US3250679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin derivative
Assignee: Wyeth LLC
•
Filing: 1964-05-27
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Granted: 1966-05-10
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Expires: 1984-05-27
Abstract
No abstract record available.
Inventors
- 👤 Alexander B A Jansen
- 👤 Trevor J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:29
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A PHARMACEUTICAL PREPARATION IN UNIT DOSAGE FORM SUITABLE FOR ORAL USE AND COMPRISING A THERAPEUTIC AMOUNT OF CRYSTALLINE ACETOXYMETHYL BENZYLPENICILLINATE AND A PHARMACEUTICALLY ACCEPTABLE CARRIER.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |