US3115441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timed release pharmaceutical preparations and method of making the same
Assignee: Individual
•
Filing: 1962-06-06
•
Granted: 1963-12-24
•
Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Victor M Hermelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5084; A61K9/20; A61K9/2072; A61K9/2077; A61K9/2081; A61K9/5073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROLONGED RELEASE ANALGESIC TABLET COMPRISING A PLURALITY OF FINELY DIVIDED HARD PARTICLES OF AN ANALGESIC DRUG, EACH PARTICLE BEING INDIVIDUALLY COATED WITH A PERMEABLE SOLUTION-RESISTANT COATING, SAID PARTICLES BEING DISPERSED THROUGHOUT A COMPRESSED MATRIX CONSISTING PREDOMINANTLY OF THE SAME ANALGESIC DRUG.
Claim 2
Dependent Claim
42 words
A PROLONGED RELEASE ANALGESIC TABLET COMPRISING A PLURALITY OF FINELY DIVIDED HARD PARTICLES OF AN ANALGESIC DRUG, EACH PARTICLE BEING INDIVIDUALLY COATED WITH A PERMEABLE SOLUTION-RESISTANT COATING, SAID PARTICLES BEING DISPERSED THROUGHOUT A COMPRESSED MATRIX CONSISTING PREDOMINANTLY OF THE SAME ANALGESIC DRUG.
References Cited (Backward Citations)
US2957804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |