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Generated: December 14, 2017

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Details for Patent: 3,965,143

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Summary for Patent: 3,965,143

Title: 16-Oxygenated prostanoic acid derivatives
Abstract:16-Oxygenated prostanoic acid derivatives, displaying valuable pharmacological properties, e.g. gastric anti-secretory, are produced by reaction of an (optionally 3-oxygenated)-5-oxocyclopent-1-enealkanoic/alkenoic acid or ester with the appropriate organometallic reagent.
Inventor(s): Collins; Paul W. (Deerfield, IL), Pappo; Raphael (Skokie, IL)
Assignee: G. D. Searle & Co. (Chicago, IL)
Application Number:05/454,913
Patent Claim Types:
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International Patent Family for Patent: 3,965,143

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina207355► Subscribe
AustriaA227375► Subscribe
Austria351684► Subscribe
Australia7947175► Subscribe
Belgium827127► Subscribe
Canada1040197► Subscribe
Switzerland613443► Subscribe
Germany2513212► Subscribe
Denmark128075► Subscribe
Egypt12063► 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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