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Generated: October 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,783,337

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Summary for Patent: 4,783,337

Title: Osmotic system comprising plurality of members for dispensing drug
Abstract:An osmotic system is disclosed comprising a wall comprising in at least a part of a semipermeable material that surrounds a compartment. The compartment contains a first osmotic composition comprising a beneficial drug selected from the group consisting of a calcium antagonist, angiotensin enzyme inhibitor and nonsteroidal antiinflammatory drugs, and a second and different osmotic composition. A passageway in the wall connects the first composition with the exterior of the system.
Inventor(s): Wong; Patrick S.-L. (Hayward, CA), Barclay; Brian L. (Sunnyvale, CA), Oeters; Joseph C. (Mountain View, CA), Theeuwes; Felix (Los Altos, CA)
Assignee: ALZA Corporation (Palo Alto, CA)
Application Number:06/912,712
Patent Claim Types:
see list of patent claims
Dosage form; Device; Composition; Delivery; Use; Formulation;

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International Patent Family for Patent: 4,783,337

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Ireland840010► Subscribe
United Kingdom2140687► Subscribe
United Kingdom8334189► Subscribe
France2545721► Subscribe
Australia566110► Subscribe
Australia2251183► Subscribe
Belgium898819► Subscribe
Belgium900817► Subscribe
Canada1222950► Subscribe
Switzerland669329► 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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