US2803583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous suspensions of penicillin compounds exhibiting decreased caking on storage and maintained resuspendability
Assignee: Novo Terapeutisk Laboratorium AS
•
Filing: 1953-10-15
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Granted: 1957-08-20
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Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 Petersen Karl
- 👤 Jacobsen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:12
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A STABLE PENICILLIN PREPARATION EXHIBITING DECREASED CAKING ON STORAGE AND MAINTAINED RESUSPENDABILITY ON SHAKING AFTER STORAGE, WHICH COMPRISES A SEALED CONTAINER, A STERILE AQUEOUS SUSPENSION OF A SLIGHTLY WATER-SOLUBLE AMINE ADDITION SALST OF PENICILLIN WITHIN SAID SEALED CONTAINER, AND A SUBSTANTIALLY OXYGEN-FREE ATMOSPHERE WITHINN SAID CONTAINER ABOVE THE LEVEL OF THE AQUEOUS SUSPENSION.
Claim 2
Dependent Claim
53 words
A STABLE PENICILLIN PREPARATION EXHIBITING DECREASED CAKING ON STORAGE AND MAINTAINED RESUSPENDABILITY ON SHAKING AFTER STORAGE, WHICH COMPRISES A SEALED CONTAINER, A STERILE AQUEOUS SUSPENSION OF A SLIGHTLY WATER-SOLUBLE AMINE ADDITION SALST OF PENICILLIN WITHIN SAID SEALED CONTAINER, AND A SUBSTANTIALLY OXYGEN-FREE ATMOSPHERE WITHINN SAID CONTAINER ABOVE THE LEVEL OF THE AQUEOUS SUSPENSION.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |