US2768115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin-aspirin tablets
Assignee: Bristol Laboratories Inc
•
Filing: 1951-11-02
•
Granted: 1956-10-23
•
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 07:22
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.
References Cited (Backward Citations)
US207013A
Cited
US312041A
Cited
US462990A
Cited
US1161690A
Cited
US2134714A
Cited
US2410110A
Cited
US2438106A
Cited
US2464053A
Cited
US2530372A
Cited
US2533066A
Cited
US2566200A
Cited
US2595239A
Cited
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 |