US3133863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release therapeutic tablet compositions comprising organic solvent-gelled gums
Assignee: Strong Cobb Arner Inc
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Filing: 1961-03-10
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Granted: 1964-05-19
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Tansey Robert Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:02
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2054; Y; Y10; Y10S; Y10S424/00; Y10S424/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A COMPOSITION OF MATTER COMPRISING A THERAPEUTIC AGENT DISPERSED IN A CELLULOSE GUM SELECTED FROM THE GROUP CONSISTING OF METHYLCELLULOSE, ETHYLCELLULOSE, HYDROXYETHYLCELLULOSE AND CARBOXYMETHYLCELLULOSE GELLED IN AN ANHYDROUS VOLATILE ORGANIC SOLVENT PRIOR TOEVAPORATION OF SUCH SOLVENT AND FORMING A HOMOGENEOUS MATRIX IN SITU, AND THE MATRIX BEING SELF-GRANULATING AS THE SOLVENT EVAPORATES.
Claim 2
Dependent Claim
52 words
A COMPOSITION OF MATTER COMPRISING A THERAPEUTIC AGENT DISPERSED IN A CELLULOSE GUM SELECTED FROM THE GROUP CONSISTING OF METHYLCELLULOSE, ETHYLCELLULOSE, HYDROXYETHYLCELLULOSE AND CARBOXYMETHYLCELLULOSE GELLED IN AN ANHYDROUS VOLATILE ORGANIC SOLVENT PRIOR TOEVAPORATION OF SUCH SOLVENT AND FORMING A HOMOGENEOUS MATRIX IN SITU, AND THE MATRIX BEING SELF-GRANULATING AS THE SOLVENT EVAPORATES.
References Cited (Backward Citations)
US2218591A
Cited
US2529461A
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US2921883A
Cited
US2991226A
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US2987445A
Cited
US2951792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |