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Details for Patent: 4,876,248

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Summary for Patent: 4,876,248

Title: Anti-inflammatory products derived from methylene-diphosphonic acid, and process for their preparation
Abstract:The present invention relates to products of the formula ##STR1## where R.sub.1 is H or alkyl, n is an integer from 0 to 10, and R.sub.2 is chosen from amongst H, unsubstituted or substituted alkyl radicals, a ##STR2## group, a substituted or unsubstituted phenyl radical, a ##STR3## group, where X is oxygen or sulfur, or a heterocyclic radical with 5 or 6 members, which may or may not be fused to a benzene ring and R.sub.3 is H or OH. The present invention also relates to a process for the preparation of the products of the formula (I), and to the drugs, having in particular an anti-inflammatory effect, containing a product of formula (I).
Inventor(s): Breliere; Jean C. (Montpellier, FR), Emonds-Alt; Xavier (Montpellier, FR), Garcia; Georges (Saint-Gely-du-Fesc, FR)
Assignee: Sanofi (Paris, FR)
Application Number:07/165,080
Patent Claim Types:
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Compound; Composition;

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Foreign Priority and PCT Information for Patent: 4,876,248

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
France82 13250Jul 29, 1982

International Patent Family for Patent: 4,876,248

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina242393► Subscribe
Argentina242394► Subscribe
Austria30235► Subscribe
Australia1732483► Subscribe
Australia566880► 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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