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Serving 500+ biopharmaceutical companies globally:

Queensland Health
Fish and Richardson
Chinese Patent Office
Daiichi Sankyo

Generated: June 24, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,452,808

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Summary for Patent: 4,452,808

Title: 4-Aminoalkyl-2(3H)-indolones
Abstract:A series of new chemical compounds which are 4-aminoalkyl-2(3H)-indolones has been demonstrated to be D.sub.2 -agonists useful for treating hypertension. A representative compound of the series is 4-di-n-propylaminoethyl-2(3H)-indolone.
Inventor(s): Gallagher, Jr.; Gregory (Collegeville, PA)
Assignee: Smithkline Beckman Corporation (Philadelphia, PA)
Application Number:06/447,564
Patent Claim Types:
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Compound; Composition;

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International Patent Family for Patent: 4,452,808

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria23038► Subscribe
Australia2158583► Subscribe
Australia560170► Subscribe
Brazil1100036► Subscribe
Canada1208650► 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 500+ biopharmaceutical companies globally:

Fish and Richardson
US Army
Federal Trade Commission

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