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Details for Patent: 5,264,446

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Summary for Patent: 5,264,446

Title: Solid medicament formulations containing nifedipine, and processes for their preparation
Abstract:The invention is directed to the provision of solid pharmaceutical compositions (and methods for their preparation) containing nifidipine crystals with a specific surface area of 1.0 to 4.0 m.sup.2 /g., in admixture with a solid diluent. The said compositions overcome the deficiencies of prior art compositions containing nifidipine, which is known to have effect as a coronary vasodilator.
Inventor(s): Hegasy; Ahmed (Leverkusen, DE), Ramsch; Klaus-Dieter (Heerlen, NL)
Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)
Application Number:07/892,439
Patent Claim Types:
see list of patent claims
Composition; Dosage form; Use;

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Foreign Priority and PCT Information for Patent: 5,264,446

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany3033919Sep 09, 1980

International Patent Family for Patent: 5,264,446

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Germany3033919► subscribe
Germany3161838► subscribe
Denmark396381► 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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