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Generated: April 28, 2017

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Details for Patent: 4,466,972

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Summary for Patent: 4,466,972

Title: Benzoxadiazoles and benzothiadiazoles, their preparation and pharmaceutical compositions containing them
Abstract:Compounds of formula I, ##STR1## wherein X is oxygen or sulphur, and R.sub.1 -R.sub.6 are various substituents. The compounds are useful for treating coronary insufficiency, intermittent claudication, cerebrovascular insults, spasms in muscles and hypertension.
Inventor(s): Neumann; Peter (Berne, CH)
Assignee: Sandoz Ltd. (Basel, CH)
Application Number:06/359,751
Patent Claim Types:
see list of patent claims
Compound; Use; Composition;

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Foreign Priority and PCT Information for Patent: 4,466,972

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Switzerland7520/77Jun 20, 1977
Switzerland2865/78Mar 16, 1978
Switzerland5627/79Jun 15, 1978
Switzerland12835/78Dec 18, 1978
Switzerland12888/78Dec 18, 1978

International Patent Family for Patent: 4,466,972

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Ireland781231► Subscribe
Hong Kong65184► Subscribe
Hong Kong16086► Subscribe
United Kingdom2103203► Subscribe
United Kingdom2041358► 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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