US3557280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable solutions of oxytetracycline suitable for parenteral and peroral administration and process of preparation
Assignee: DSM Delft BV
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Filing: 1967-05-26
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Granted: 1971-01-19
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Expires: 1987-05-26
Abstract
Abstract THE PRESENT INVENTION RELATES TO A CLEAR, STABLE, AQUEOUS SOLUTION OF OXYTETRACYCLINE FOR MEDICAL APPLICATIONS CONSISTING ESSENTIALLY OF OXYTETRACYCLINE AND WATER CONTAINING POLYVINYL PYRROLIDONE AND A MAGNESIUM COMPOUND, SAID AQUEOUS SOLUTION HAVING A PH IN THE RANGE OF FROM 8.0 TO 9.5, AS WELL AS TO THE PROCESS OF PREPARING THE SAME. THE OXYTETRACYCLINE SOLUTIONS ARE UTILIZED IN PARENTERAL AND PERORAL ADMINISTRATIONS, ARE FREE FROM ADVERSE SIDE EFFECTS AND ARE STABLE OVER LONG PERIODS OF STORAGE.
Inventors
- 👤 Hubert Antonius Weber
- 👤 Adrianus Pieter Molenaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:33
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/785; A61K31/787; A61K31/79; A61K31/65
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |