US3080294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release type of pharmaceutical vehicles
Assignee: Key Pharmaceuticals Inc
•
Filing: 1960-10-20
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Granted: 1963-03-05
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Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Shepard Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:01
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5073; A61K9/5078; A61K9/5005; A61K9/5015; A61K9/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A SUSTAINED RELEASE TYPE PHARMACEUTICAL PELLET COMPRISING AN INNER CORE COATED WITH A MEMBER OF THE GROUP CONSISTING OF SUCROSE, CELLULOSE ACETATE-PHTHALATE, PHARMACEUTICAL GLAZES AND VEGETABLE GUMS AND HAVING AT LEAST ONE SURROUNDING LAYER OF A MEDICAMENT THEREON, A COATING UPON EACH MEDICAMENT LAYER COMPRISING A MIXTURE OF NOT LESS THAN ABOUT 95% BY WEIGHT OF SAID COATING OF A GLYCERIDE OF A LONG CHAIN ALIPHATIC CARBOXYLIC ACID, AND MINOR AMOUNTS OF AT LEAST ONE LONG CHAIN FATTY ALCOHOL AND OF BEESWAX, THE WEIGHT OF EACH COATING BEING BETWEEN ABOUT 5% AND ABOUT 10% BY WEIGHT OF THAT PORTION OF SAID PELLET COATED THEREBY, EACH SUCH COATING PROVIDING APPROXIMATELY AN HOURLY INCREMENT OF SUSTAINMENT.
Claim 2
Dependent Claim
114 words
A SUSTAINED RELEASE TYPE PHARMACEUTICAL PELLET COMPRISING AN INNER CORE COATED WITH A MEMBER OF THE GROUP CONSISTING OF SUCROSE, CELLULOSE ACETATE-PHTHALATE, PHARMACEUTICAL GLAZES AND VEGETABLE GUMS AND HAVING AT LEAST ONE SURROUNDING LAYER OF A MEDICAMENT THEREON, A COATING UPON EACH MEDICAMENT LAYER COMPRISING A MIXTURE OF NOT LESS THAN ABOUT 95% BY WEIGHT OF SAID COATING OF A GLYCERIDE OF A LONG CHAIN ALIPHATIC CARBOXYLIC ACID, AND MINOR AMOUNTS OF AT LEAST ONE LONG CHAIN FATTY ALCOHOL AND OF BEESWAX, THE WEIGHT OF EACH COATING BEING BETWEEN ABOUT 5% AND ABOUT 10% BY WEIGHT OF THAT PORTION OF SAID PELLET COATED THEREBY, EACH SUCH COATING PROVIDING APPROXIMATELY AN HOURLY INCREMENT OF SUSTAINMENT.
References Cited (Backward Citations)
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Cited
US2853420A
Cited
US2887438A
Cited
US2956926A
Cited
US2954323A
Cited
US2928770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |