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US2804424A
Expired / Lapsed
US
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Method of preparing a tetracycline type antibiotic-containing wound dressing
Assignee: Wyeth Holdings LLC
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Filing: 1951-04-24
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Granted: 1957-08-27
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Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Stirn Frank Edwin
- 👤 Carstensen Jens Thuroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/46; A61L2300/00; A61L2300/40; A61L2300/404; A61L2300/406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US302073A
Cited
US2173203A
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US2408818A
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US2464755A
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US2571849A
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US2680701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |