US2804425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlortetracycline gauze and method for production
Assignee: Wyeth Holdings LLC
•
Filing: 1952-07-02
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Granted: 1957-08-27
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Expires: 1972-07-02
Abstract
No abstract record available.
Inventors
- 👤 Smith David Frederick
- 👤 Foglia Andrew John
- 👤 Callahan John Charles
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: 2
Claim 1
Independent Claim
63 words
A STERILE, ANHYDROUS, STORAGE STABLE, CHLORTETRACYCLINECONTAINING WOUND PACKING COMPRISING A LINTLESS, HEAVY METAL-FREE GAUZE IMPREGNATED WITH FROM ABOUT 1 MILLIGRAM TO 10 MILLIGRAMS PER GRAM OF GAUZE OF A THERAPEUTICALLY EFFECTIVE FORM OF CHLORTETRACYCLINE SELECTED FROM THE GROUP CONSISTING OF NEUTRAL CHLORTETRACYCLINE AND ITS ACID ADDITION SALTS, SAID FROM OF CHLORTETRACYCLINE BEING THAT RESULTANT FROM ANHYDROUS EVAPORATION OF A SOLUTION OF SAID CHLORTET-
Claim 2
Dependent Claim
63 words
A STERILE, ANHYDROUS, STORAGE STABLE, CHLORTETRACYCLINECONTAINING WOUND PACKING COMPRISING A LINTLESS, HEAVY METAL-FREE GAUZE IMPREGNATED WITH FROM ABOUT 1 MILLIGRAM TO 10 MILLIGRAMS PER GRAM OF GAUZE OF A THERAPEUTICALLY EFFECTIVE FORM OF CHLORTETRACYCLINE SELECTED FROM THE GROUP CONSISTING OF NEUTRAL CHLORTETRACYCLINE AND ITS ACID ADDITION SALTS, SAID FROM OF CHLORTETRACYCLINE BEING THAT RESULTANT FROM ANHYDROUS EVAPORATION OF A SOLUTION OF SAID CHLORTET-
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) | 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 |