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Serving leading biopharmaceutical companies globally:

Argus Health
Express Scripts
US Army
Queensland Health

Generated: November 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,798,725

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Summary for Patent: 4,798,725

Title: Sustained release capsule
Abstract:The invention involves a sustained release pharmaceutical capsule for oral administration comprising, in a capsule shell, a particulate mixture comprising an active drug ingredient which is a weak acid, neutral, or a weak base, polyvinylpyrrolidone, and carboxyvinylpolymer.
Inventor(s): Patel; Vikram S. (Norwich, NY)
Assignee: Norwich Eaton Pharmaceuticals, Inc. (Norwich, NY)
Application Number:06/874,732
Patent Claim Types:
see list of patent claims
Dosage form; Process;

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International Patent Family for Patent: 4,798,725

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria398165► Subscribe
AustriaA151587► Subscribe
Australia589866► Subscribe
Australia7421287► Subscribe
Canada1295247► Subscribe
Germany3772269► Subscribe
Denmark306587► Subscribe
European Patent Office0250038► Subscribe
Ireland60586► Subscribe
Ireland871584► 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:

Boehringer Ingelheim
Cantor Fitzgerald
Queensland Health
US Army
Chinese Patent Office

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