Patent US2939818A successfully refreshed from Google Patents.
US2939818A
Expired / Lapsed
US
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Aqueous therapeutic compositions
Assignee: Pfizer Inc
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Filing: 1957-04-09
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Granted: 1960-06-07
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Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:32
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A THERAPEUTIC COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A WATER-INSOLUBLE SALT OFF ENICILLIN IN FINELY DIVIDED FORM AND A MINOR PROPORTION BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHOLINE, CHOLINE CHLORIDE, CHOLINE DIHYDROGEN CITRATE, CHOLINE DIHYDROGEN TARTRATE AND CHOLNE CHLORIDE CARBAMATE, THE ABMOUNT OF SAID COMPOUND BASED ON THE WEIGHT OF THE WATER-INSOLUBLLE SALT OF PENICILLIN BEING WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 10%.
Claim 2
Dependent Claim
70 words
A THERAPEUTIC COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A WATER-INSOLUBLE SALT OFF ENICILLIN IN FINELY DIVIDED FORM AND A MINOR PROPORTION BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHOLINE, CHOLINE CHLORIDE, CHOLINE DIHYDROGEN CITRATE, CHOLINE DIHYDROGEN TARTRATE AND CHOLNE CHLORIDE CARBAMATE, THE ABMOUNT OF SAID COMPOUND BASED ON THE WEIGHT OF THE WATER-INSOLUBLLE SALT OF PENICILLIN BEING WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 10%.
References Cited (Backward Citations)
US2749274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |