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Farmers Insurance
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Generated: December 12, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,138,475

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Summary for Patent: 4,138,475

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)
Application Number:05/833,339
Patent Claim Types:
see list of patent claims
Composition; Compound; Dosage form;

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Foreign Priority and PCT Information for Patent: 4,138,475

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom23114/77Jun 1, 1977

International Patent Family for Patent: 4,138,475

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia510215► Subscribe
Australia2861477► Subscribe
Belgium859288► Subscribe
Canada1100040► Subscribe
Switzerland638399► Subscribe
Germany2740286► Subscribe
Denmark244378► Subscribe
Denmark153773► Subscribe
France2392667► Subscribe
United Kingdom1561204► Subscribe
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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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Serving leading biopharmaceutical companies globally:

Chinese Patent Office
Harvard Business School
Farmers Insurance
US Department of Justice

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