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Serving leading biopharmaceutical companies globally:

Argus Health
Cantor Fitzgerald
Fish and Richardson
Queensland Health

Generated: December 14, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,366,310

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Summary for Patent: 4,366,310

Title: Controlled release compositions
Abstract:Molecular coordination complexes are formed between a cellulose polymer and a non-polar solid aliphatic alcohol containing 8 to 18 carbon atoms optionally substituted with an aliphatic group containing 8 to 18 carbon atoms by solvating the polymer with a volatile polar solvent and reacting the solvated cellulose polymer directly with the aliphatic alcohol, preferably as a melt. The resulting composition may be dried. This constitutes the complex. The composition has utility as a matrix in controlled release formulations since it has a uniform porosity which may be varied.
Inventor(s): Leslie; Stewart T. (Aberdeen, GB6)
Assignee: Euroceltique, S.A. (LU)
Application Number:06/214,625
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 4,366,310

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Ireland2480/79Dec 19, 1979
Ireland2481/79Dec 19, 1979

International Patent Family for Patent: 4,366,310

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria13251► Subscribe
Australia541246► Subscribe
Australia6529880► Subscribe
Belgium886711► Subscribe
Canada1168230► Subscribe
Czechoslovakia228142► Subscribe
Germany3048028► Subscribe
Denmark170347► Subscribe
Denmark527680► Subscribe
Egypt14984► 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:

US Army
Cantor Fitzgerald
Argus Health

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