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|Title:||Sustained release pharmaceutical composition|
|Abstract:||Sustained release pharmaceutical composition consisting of a hard gelatine capsule containing film coated spheroids, the spheroids comprising propranolol, or a pharmaceutically-acceptable salt thereof, in admixture with non-water-swellable microcrystalline cellulose, and the said spheroids having a film coat comprising ethylcellulose optionally together with hydroxypropyl methylcellulose and/or a plasticizer.|
|Inventor(s):||McAinsh; James (Macclesfield, GB2), Rowe; Raymond C. (Macclesfield, GB2)|
|Assignee:||Imperial Chemical Industries Limited (London, GB2)|
Patent Claim Types:|
see list of patent claims
|Composition; Compound; Dosage form;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|United Kingdom||23114/77||Jun 1, 1977|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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