Patent US2990328A successfully refreshed from Google Patents.
US2990328A
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Stable therapeutic compositions containing acetylsalicylic acid-anhydride
Assignee: Pharmacia and Upjohn Co
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Filing: 1958-04-18
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Granted: 1961-06-27
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Edward H Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/60; A61K31/618; A61K31/621; A61K33/00; A61K33/42; A61K47/00; A61K47/02; A61K47/06; A61K47/08; A61K47/12; A61K47/16; A61K47/18; A61K47/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A STABLE, SOLID ORAL THERAPEUTIC PREPARATION IN DOSAGE UNIT FORM COMPRISING (ACETYLSALICYLIC ACID)-ANHYDRIDE AND A PHARMACEUTICALLY ACCEPTABLE NON-ALKALINE DILUENT CONTAINING FROM ABOUT 0.3 TO ABOUT 17% BY WEIGHT OF SAID ANYHDRIDE OF A PHARMACEUTICALLY-ACCEPTABLE ACID-REACTING STABILIZING COMPOUND TO STABILIZE THE PREPARATION AGAINST DECOMPOSITION BY ALKALI, WHICH DILUENT DOES NOT LOWER SUBSTANTIALLY THE MELTING POINT OF SAID ANHYDRIDE.
Claim 2
Dependent Claim
57 words
A STABLE, SOLID ORAL THERAPEUTIC PREPARATION IN DOSAGE UNIT FORM COMPRISING (ACETYLSALICYLIC ACID)-ANHYDRIDE AND A PHARMACEUTICALLY ACCEPTABLE NON-ALKALINE DILUENT CONTAINING FROM ABOUT 0.3 TO ABOUT 17% BY WEIGHT OF SAID ANYHDRIDE OF A PHARMACEUTICALLY-ACCEPTABLE ACID-REACTING STABILIZING COMPOUND TO STABILIZE THE PREPARATION AGAINST DECOMPOSITION BY ALKALI, WHICH DILUENT DOES NOT LOWER SUBSTANTIALLY THE MELTING POINT OF SAID ANHYDRIDE.
References Cited (Backward Citations)
US922766A
Cited
US2888382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |