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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Johnson and Johnson
Cantor Fitzgerald
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Generated: November 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 3,932,645

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Summary for Patent: 3,932,645

Title: Pharmaceutical compositions containing unsymmetrical esters of 1,4-dihydropyridine 3,5-dicarboxylic acid
Abstract:Pharmaceutical compositions containing unsymmetrical esters of 1,4-dihydropyridine 3,5-dicarboxylic acids as the active ingredient and methods of using same. The said ingredients are unsymmetrical 1,4-dihydropyridine 3,5-dicarboxylates which are substituted at position-4 of the dihydropyridine nucleus by phenyl which contains at least one nitro, cyano, azido, alkylthio, or alkylsulphonyl substituent. The compositions have a cardiovascular activity which makes them useful for effecting coronary vascular dilation and, also, they have utility in the treatment of hypertension.
Inventor(s): Meyer; Horst (Wuppertal-Elberfeld, DT), Bossert; Friedrich (Wuppertal-Elberfeld, DT), Vater; Wulf (Opladen, DT), Stoepel; Kurt (Wuppertal-Vohwinkel, DT)
Assignee: Farbenfabriken Bayer AG (DT)
Application Number:05/398,982
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Dosage form;

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Foreign Priority and PCT Information for Patent: 3,932,645

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
2117571Apr 10, 1971

International Patent Family for Patent: 3,932,645

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria315178► Subscribe
Austria316551► Subscribe
Austria316552► Subscribe
Australia4045472► Subscribe
Australia4045572► Subscribe
Australia459338► Subscribe
Australia464663► Subscribe
Belgium781878► Subscribe
Belgium781879► Subscribe
Bulgaria19374► 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:

Federal Trade Commission
US Army
Daiichi Sankyo
Johnson and Johnson
Farmers Insurance
US Department of Justice

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