US3119742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing sustained release pharmaceutical pellets and product thereof
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1962-12-19
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Granted: 1964-01-28
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Heimlich
- 👤 Donald R Macdonnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
A; A61; A61J; A61J3/00; A61J3/005; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5015; A61K9/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF PREPARING SUSTAINED RELEASE ORALLY ADMINISTRABLE PHARMACEUTICAL PELLETS CONTAINING A UNIT DOSAGE AMOUNT OF FROM ABOUT 200 MG. TO ABOUT 600 MG. OF A HIGH DOSAGE MEDICAMENT WHICH COMPRISES; (A) WETTING A MEDICAMENT IN SUBSTANTIALLY SPHERICAL CRYSTALLINE FORM ROTATING IN A COATING PAN WITH AN ADHESIVE SOLUTION. (B) COATING SAID WETTED CRYSTALLINE MEDICAMENT WITH ADDITIONAL POWDERED MEDICAMENT TO FORM SUBSTANTIALLY SMOOTH, SPHERICAL PELLETS. (C) DRYING AND SEPARATING SAID PELLETS INTO A PLURALITY OF GROUPS, (D) COATING AT LEAST ONE OF SAID GROUPS OF PELLETS WITH A PHARMACEUTICALLY ACCEPTABLE SUSTAINED RELEASE LIPID MATERIAL RESISTANT TO DISINTEGRATION AND SLOWLY DISPERSIBLE IN THE GASTROINTESTINAL TRACT, AND (E) BLENDING SAID GROUPS.
Claim 2
Independent Claim
109 words
THE METHOD OF PREPARING SUSTAINED RELEASE ORALLY ADMINISTRABLE PHARMACEUTICAL PELLETS CONTAINING A UNIT DOSAGE AMOUNT OF FROM ABOUT 200 MG. TO ABOUT 600 MG. OF A HIGH DOSAGE MEDICAMENT WHICH COMPRISES; (A) WETTING A MEDICAMENT IN SUBSTANTIALLY SPHERICAL CRYSTALLINE FORM ROTATING IN A COATING PAN WITH AN ADHESIVE SOLUTION. (B) COATING SAID WETTED CRYSTALLINE MEDICAMENT WITH ADDITIONAL POWDERED MEDICAMENT TO FORM SUBSTANTIALLY SMOOTH, SPHERICAL PELLETS. (C) DRYING AND SEPARATING SAID PELLETS INTO A PLURALITY OF GROUPS, (D) COATING AT LEAST ONE OF SAID GROUPS OF PELLETS WITH A PHARMACEUTICALLY ACCEPTABLE SUSTAINED RELEASE LIPID MATERIAL RESISTANT TO DISINTEGRATION AND SLOWLY DISPERSIBLE IN THE GASTROINTESTINAL TRACT, AND (E) BLENDING SAID GROUPS.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |