US2928769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of controlled release medicaments
Assignee: STRONG COBB AND Co Inc
•
Filing: 1957-07-22
•
Granted: 1960-03-15
•
Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 William E Gaunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2013; A61K9/14; A61K9/16; A61K9/1605; A61K9/1617
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR THE PRODUCTION OF ORALLY ADMINISTRABLE CONTROLLED RELEASE MEDICAMENTS WHICH COMPRISES SUSPENDING PARTICLES OF A THERAPEUTIC AGENT IN A VOLATILE SOLVENT, ADDING A METAL SOAP SOLUBLE IN SAID SOLVENT, HEATING THE MIXTURE AND EVAPORATING THE GREATER PART OF THE SOLVENT FROM THE RESULTANT GEL, BREAKING THE GEL INTO SMALL PIECES AND REMOVING THE REMAINING SOLVENT FROM THE PIECES OF GEL BY EVAPORATION TO PRODUCE HARD GRANULES EACH OF WHICH CONTAINS ENMESHED THEREIN PARTICLES OF THE THERAPEUTIC AGENT.
Claim 2
Dependent Claim
79 words
A PROCESS FOR THE PRODUCTION OF ORALLY ADMINISTRABLE CONTROLLED RELEASE MEDICAMENTS WHICH COMPRISES SUSPENDING PARTICLES OF A THERAPEUTIC AGENT IN A VOLATILE SOLVENT, ADDING A METAL SOAP SOLUBLE IN SAID SOLVENT, HEATING THE MIXTURE AND EVAPORATING THE GREATER PART OF THE SOLVENT FROM THE RESULTANT GEL, BREAKING THE GEL INTO SMALL PIECES AND REMOVING THE REMAINING SOLVENT FROM THE PIECES OF GEL BY EVAPORATION TO PRODUCE HARD GRANULES EACH OF WHICH CONTAINS ENMESHED THEREIN PARTICLES OF THE THERAPEUTIC AGENT.
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US2409950A
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US2661315A
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US2719103A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |