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Generated: December 12, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,762,709

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Summary for Patent: 4,762,709

Title: Liquid prolonged release pharmaceutical formulations containing ionic constituents
Abstract:A formulation of a drug wherein the drug is present as a coated, drug-resin complex suspended in a liquid carrier which carrier also contains a second ionic component bearing the same charge as the coated complexed drug, the second ionic component being present as an uncoated, insoluble drug-resin complex.
Inventor(s): Sheumaker; Jerry L. (Fairport, NY)
Assignee: Pennwalt Corporation (Philadelphia, PA)
Application Number:06/825,681
Patent Claim Types:
see list of patent claims
Composition; Formulation;

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International Patent Family for Patent: 4,762,709

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Ireland841201► Subscribe
Finland843609► Subscribe
European Patent Office0139881► Subscribe
Denmark164019► Subscribe
Denmark434784► Subscribe
Germany3478085► Subscribe
Canada1221632► Subscribe
Australia2789184► Subscribe
Australia565487► Subscribe
Austria42894► 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:

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