US3087860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of prolonging release of drug from a precompressed solid carrier
Assignee: Abbott Laboratories
•
Filing: 1958-12-19
•
Granted: 1963-04-30
•
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 15:49
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.
References Cited (Backward Citations)
USRE24090E
Cited
US312041A
Cited
CA548310A
Cited
US2149005A
Cited
US2385920A
Cited
US2478182A
Cited
GB665073A
Cited
US2955982A
Cited
US2707201A
Cited
US2719093A
Cited
US2806256A
Cited
US2894289A
Cited
US2987455A
Cited
US2877159A
Cited
US2928769A
Cited
US2928771A
Cited
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 |