Patent US3087860A successfully refreshed from Google Patents.
US3087860A
Expired / Lapsed
US
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Method of prolonging release of drug from a precompressed solid carrier
Assignee: Abbott Laboratories
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Filing: 1958-12-19
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Granted: 1963-04-30
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Expires: 1978-12-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Endicott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:44
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2095; A61K9/2004; A61K9/2022; A61K9/2027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF PROLONGING THE RELEASE OF A DRUG FROM A COMPRESSED MIXTURE OF DRUG AND AN INERT, WATER INSOLUBLE, NON-TOXIC, NON-BRITTLE, SYNTHETIC POLYMER HAVING A GLASS POINT OF AT LEAST 105*F. WHICH COMPRISES EXPOSING SAID MIXTURE TO THE VAPORS OF A VOLARILE ORGANIC SOLVENT FOR SAID POLYMER IN A CONFINED SPACE FOR A PERIOD OF TIME SUFFICIENT TO RESULT IN SOFTENING THE SURFACE OF SAID POLYMER AND THUS FUSE THE INDIVIDUAL POLYMER PARTICLES THROUGHOUT THE MIXTURE INTO A FORAMINOUS STRUCTURE OF FURTHER EMBED THE DRUG THEREIN.
Claim 2
Independent Claim
87 words
THE METHOD OF PROLONGING THE RELEASE OF A DRUG FROM A COMPRESSED MIXTURE OF DRUG AND AN INERT, WATER INSOLUBLE, NON-TOXIC, NON-BRITTLE, SYNTHETIC POLYMER HAVING A GLASS POINT OF AT LEAST 105*F. WHICH COMPRISES EXPOSING SAID MIXTURE TO THE VAPORS OF A VOLARILE ORGANIC SOLVENT FOR SAID POLYMER IN A CONFINED SPACE FOR A PERIOD OF TIME SUFFICIENT TO RESULT IN SOFTENING THE SURFACE OF SAID POLYMER AND THUS FUSE THE INDIVIDUAL POLYMER PARTICLES THROUGHOUT THE MIXTURE INTO A FORAMINOUS STRUCTURE OF FURTHER EMBED THE DRUG THEREIN.
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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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |