US3146169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical formulations and their manufacture
Assignee: SmithKline Beecham Corp
•
Filing: 1962-06-08
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Granted: 1964-08-25
•
Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 Stephenson Douglas
- 👤 Spence John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0068; A61J; A61J3/00; A61J3/07; A61J3/10; A61K9/20; A61K9/2072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROLONGED ACTING MEDICINAL PREPARATION ADAPTED FOR INTERNAL ADMINISTRATION COMPRISING A SOLID INNER MEDICATED PORTION READILY DISSOLVABLE IN THE FLUIDS OF THE GASTROINTESTINAL TRACT AND AN OUTER NON-MEDICATED PORTION WHICH IS SUBSTANTIALLY INSOLUBLE, INDIGESTIBLE AND UNABSORBABLE IN THE FLUIDS OF THE GASTRO-INTESTINAL TRACT AND WHICH IS INERT AND IMPERMEABLE TO THE MEDICAMENT AND SUBSTANTILY SURROUNDS THE READILY DISSOLVABLE INNER PORTION EXCEPT
Claim 2
Dependent Claim
61 words
A PROLONGED ACTING MEDICINAL PREPARATION ADAPTED FOR INTERNAL ADMINISTRATION COMPRISING A SOLID INNER MEDICATED PORTION READILY DISSOLVABLE IN THE FLUIDS OF THE GASTROINTESTINAL TRACT AND AN OUTER NON-MEDICATED PORTION WHICH IS SUBSTANTIALLY INSOLUBLE, INDIGESTIBLE AND UNABSORBABLE IN THE FLUIDS OF THE GASTRO-INTESTINAL TRACT AND WHICH IS INERT AND IMPERMEABLE TO THE MEDICAMENT AND SUBSTANTILY SURROUNDS THE READILY DISSOLVABLE INNER PORTION EXCEPT
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |