US3078216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prolonged release oral pharmaceutical preparations
Assignee: Wyeth Holdings LLC
•
Filing: 1961-04-11
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Granted: 1963-02-19
•
Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 Greif Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:57
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5015; A61K9/20; A61K9/2072; A61K9/2077; A61K9/2081; A61K9/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ORAL PHARMACEUTICAL PREPARATION HAVING A PROLONGED RELEASE COMPRISING A PLURALITY OF MEDICAMENT GRANULES, SUBSTANTIALLY ALL BEING FROM 12 MESH TO 80 MESH, EACH COATED WITH A LAYER OF WATER INSOLUBLE, PARTLY DIGESTIBLE HYDROPHOBIC MATERIAL, THE THICKNESS OF COATING VARYING DIRECTLY WITH PARTICLE SIZE WHEREBY IN ORAL USE THE VERY FINE GRANULES RAPIDLY RELEASE THEIR MEDICAMENT AND THE GRANULES OF INCREASING SIZE RELEASE THEIR MEDICAMENT MORE AND MORE SLOWLY.
Claim 2
Dependent Claim
69 words
AN ORAL PHARMACEUTICAL PREPARATION HAVING A PROLONGED RELEASE COMPRISING A PLURALITY OF MEDICAMENT GRANULES, SUBSTANTIALLY ALL BEING FROM 12 MESH TO 80 MESH, EACH COATED WITH A LAYER OF WATER INSOLUBLE, PARTLY DIGESTIBLE HYDROPHOBIC MATERIAL, THE THICKNESS OF COATING VARYING DIRECTLY WITH PARTICLE SIZE WHEREBY IN ORAL USE THE VERY FINE GRANULES RAPIDLY RELEASE THEIR MEDICAMENT AND THE GRANULES OF INCREASING SIZE RELEASE THEIR MEDICAMENT MORE AND MORE SLOWLY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |