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Serving leading biopharmaceutical companies globally:

Argus Health

Generated: November 18, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,863,743

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Summary for Patent: 4,863,743

Title: Controlled release potassium chloride
Abstract:A controlled release potassium chloride tablet is disclosed which is comprised of potassium chloride crystals having a mesh size of about 30 to about 50 mesh which are coated with a coating material comprised of ethylcellulose and hydroxypropylcellulose. The coated crystals form micro pellets which then can be compressed into tablets. The tablets disintegrate rapidly in an aqueous environment thus assuring a more uniform dissolution of the active component as compared with other types of controlled release potassium chloride dosage formulations. The distribution of the potassium chloride micro pellets over a wide surface area in the gastrointestinal mucosa aids in reducing the risk of gastrointestinal lesions. The formation of the coated micro pellets which disperse quickly upon contact with aqueous environment allow for the repeated chronic oral administration of a relatively large dose of potassium chloride (20 mEq).
Inventor(s): Hsiao; Charles (Cooper City, FL), Chou; Chi T. (Monsey, NY)
Assignee: Key Pharmaceuticals, Inc. (Kenilworth, NJ)
Application Number:06/830,981
Patent Claim Types:
see list of patent claims
Dosage form; Use;

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International Patent Family for Patent: 4,863,743

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria52918► Subscribe
Australia5514086► Subscribe
Australia583903► Subscribe
Canada1270765► Subscribe
Germany3671373► Subscribe
Denmark165123► Subscribe
Denmark494986► Subscribe
European Patent Office0211946► Subscribe
Spain552145► Subscribe
Spain8801121► 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
Boehringer Ingelheim
Cantor Fitzgerald

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