Patent US2798024A successfully refreshed from Google Patents.
US2798024A
Expired / Lapsed
US
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Composite enteric tablet of erythromycin and sulfonamides
Assignee: Eli Lilly and Co
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Filing: 1954-06-02
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Granted: 1957-07-02
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Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Zapapas James Richard
- 👤 George F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; A61K9/2086; A61K9/209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A MEDICINAL TABLET COMPRISED OF AN INNER BASE TABLET CONSISTING OF A MIXTURE OF ERYTHROMYCIN AND AT LEAST ONE SULFONAMIDE DRUG, THE AMOUNT OF SAID SULFONAMIDE BEING SUBSTANTIALLY LESS THAN THE AMOUNT OF SULFONAMIDE REQUIRED FOR A THERAPEUTIC DOSE IN CONJUNCTION WITH SAID ERYTHROMYCIN; AN ENTERIC COATING SURROUNDING SAID INNER BASE TABLET, AND A COMBINATION FILLER AND MEDICAMENT LAYER SURROUNDING SAID ENTERIC-COATED INNER BASE TABLET, COMPRISING AT LEAST ONE SULFONAMIDE DRUG IN AMOUNT SUFFICIENT TO COMPLETE THE AMOUNT OF SULFONAMIDE REQUIRED FOR A THERAPEUTIC DOSE IN CONJUNCTION WITH ERYTHROMYCIN.
Claim 2
Dependent Claim
89 words
A MEDICINAL TABLET COMPRISED OF AN INNER BASE TABLET CONSISTING OF A MIXTURE OF ERYTHROMYCIN AND AT LEAST ONE SULFONAMIDE DRUG, THE AMOUNT OF SAID SULFONAMIDE BEING SUBSTANTIALLY LESS THAN THE AMOUNT OF SULFONAMIDE REQUIRED FOR A THERAPEUTIC DOSE IN CONJUNCTION WITH SAID ERYTHROMYCIN; AN ENTERIC COATING SURROUNDING SAID INNER BASE TABLET, AND A COMBINATION FILLER AND MEDICAMENT LAYER SURROUNDING SAID ENTERIC-COATED INNER BASE TABLET, COMPRISING AT LEAST ONE SULFONAMIDE DRUG IN AMOUNT SUFFICIENT TO COMPLETE THE AMOUNT OF SULFONAMIDE REQUIRED FOR A THERAPEUTIC DOSE IN CONJUNCTION WITH ERYTHROMYCIN.
References Cited (Backward Citations)
US2099402A
Cited
US2196768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |