Patent US172687A successfully refreshed from Google Patents.
Patent US2768115A successfully refreshed from Google Patents.
US2768115A
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Penicillin-aspirin tablets
Assignee: Bristol Laboratories Inc
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Filing: 1951-11-02
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Granted: 1956-10-23
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Expires: 1971-11-02
Abstract
No abstract record available.
Inventors
- 👤 Frank H Buckwalter
- 👤 Alphonse P Granatek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:41
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; A61K9/2086; A61K9/209; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A THERAPEUTIC TABLET, WHICH IS STABLE OVER LONG PERIODS OF TIME AND WHICH IS ADAPTED FOR ORAL INGESTION, HAVING A SOLID CENTER COMPRISING A THERAPEUTICALLY EFFECTIVE, WATER-INSULUBLE SALT OF PENICILLIN, SAID CENTER BEING SEPARATED FROM THE ADJOINING CONCENTRIC LAYER BY A FILM OF LIQUID UNSATURATED VEGETABLE OIL, AND HAVING AT LEAST ONE CONCENTRIC OUTER LAYER COMPRISING ASPRIN, SAID ASPIRIN BEING THUS EXCLUDED FROM INTIMATE CONTACT WITH SAID SALT OF PENICILLIN, THE SAID CONCENTRIC OUTER LAYER COMPRISING ALSO PHENACETIN, CAFFEINE AND 2-BENZYLPHENYL BETADIMETHYLAMINOETHYL ETHER DIHYDROGEN CITRATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |