US3371015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical core compositions with thin rapidly disintegrating coatings
Assignee: Hassle AB
•
Filing: 1963-06-27
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Granted: 1968-02-27
•
Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Sjogren John Albert
- 👤 Persson Rolf Gustav Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:23
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PHARMACEUTICAL COMPOSITION CONSISTING ESSENTIALLY OF A CORE CONTAINING THERAPEUTICALLY EFFECTIVE QUANTITIES OF ACTIVE SUBSTANCE AND A MEDICAMENT-FREE COATING ON SAID CORE, SAID COATING DISINTEGRATING RAPIDLY IN WATER AND GASTRIC JUICE AND COMPRISING AN INNER LAYER NOT MORE THAN 0.005 TO 1.0 MM. THICK OF POLYETHYLENE GLYCOL OF MOLECULAR WEIGHT 4000-40000 AND AN OUTER LAYER NOT MORE THAN 0.003 TO 0.05 MM. THICK OF A NON-TOXIC, WATER-INSOLUBLE, FILM-FORMING THERMOPLASTIC SUBSTANCE SOLUBLE IN A VOLATILE ORGANIC SOLVENT SELECTED FROM THE CLASS CONSISTING OF CELLULOSE ACETATE PHTHALATE, CELLULOSE ACETATE SUCCINATE, CELLULOSE ACETATE, CELLULOSE PROPIONATE, CELLULOSE BUTYRATE, POLYALKYLMETHACRYLATES, POLYVINYLACETATE, SILICONE RESINS, SHELLAC, ZEIN, ACRYLIC/METHACRYLIC ACID COPOLYMERS, VINYL ACETATE/MALEIC ACID COPOLYMERS, AND VINYL ACETATE/VILNYLPYROLIDONE COPOLYMERS.
Claim 2
Dependent Claim
111 words
A PHARMACEUTICAL COMPOSITION CONSISTING ESSENTIALLY OF A CORE CONTAINING THERAPEUTICALLY EFFECTIVE QUANTITIES OF ACTIVE SUBSTANCE AND A MEDICAMENT-FREE COATING ON SAID CORE, SAID COATING DISINTEGRATING RAPIDLY IN WATER AND GASTRIC JUICE AND COMPRISING AN INNER LAYER NOT MORE THAN 0.005 TO 1.0 MM. THICK OF POLYETHYLENE GLYCOL OF MOLECULAR WEIGHT 4000-40000 AND AN OUTER LAYER NOT MORE THAN 0.003 TO 0.05 MM. THICK OF A NON-TOXIC, WATER-INSOLUBLE, FILM-FORMING THERMOPLASTIC SUBSTANCE SOLUBLE IN A VOLATILE ORGANIC SOLVENT SELECTED FROM THE CLASS CONSISTING OF CELLULOSE ACETATE PHTHALATE, CELLULOSE ACETATE SUCCINATE, CELLULOSE ACETATE, CELLULOSE PROPIONATE, CELLULOSE BUTYRATE, POLYALKYLMETHACRYLATES, POLYVINYLACETATE, SILICONE RESINS, SHELLAC, ZEIN, ACRYLIC/METHACRYLIC ACID COPOLYMERS, VINYL ACETATE/MALEIC ACID COPOLYMERS, AND VINYL ACETATE/VILNYLPYROLIDONE COPOLYMERS.
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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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |