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Generated: April 30, 2017

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Details for Patent: 5,004,613

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Summary for Patent: 5,004,613

Title: Oral sustained release pharmaceutical formulation and process
Abstract:A pharmaceutical sustained release tablet or tablet layer is formed by making a wet granulation, using povidone (PVP) in water or alcohol-water as the granulating fluid which is mixed with a pharmaceutical active, hydroxyethyl cellulose, a wicking agent e.g. microcrystalline cellulose, then drying and milling the granulation and blending with dry powdered erosion promotor, e.g. pregelantinized starch, additional wicking agent, lubricant e.g. magnesium stearate and glidant e.g. silicon dioxide, and compressing the resultant granulation, which upon administration results in a slow release of the pharmaceutical active.
Inventor(s): Radebaugh; Galen W. (Chester, NJ), Murtha; John L. (Holland, PA), Glinecke; Robert (Glenside, PA)
Assignee: McNeil-PPC, Inc. (Milltown, NJ)
Application Number:07/392,748
Patent Claim Types:
see list of patent claims
Dosage form; Process; Composition; Formulation;

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International Patent Family for Patent: 5,004,613

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0305051► Subscribe
Spain2054813► Subscribe
Greece880100491► Subscribe
Greece1000254► Subscribe
Hong Kong87893► 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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