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Details for Patent: 3,857,952

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Summary for Patent: 3,857,952

Title: CERTAIN BENZENE DERIVATIVES USEFUL IN TREATING CARDIAC DISORDERS
Abstract:Benzene derivatives of the formula: ##SPC1## Wherein R.sup.1 represents alkanoyl amino of not more than nine carbon atoms, R.sup.2 represents alkyl of one through six carbon atoms, and R.sup.3 represents alkyl of one through six carbon atoms or cycloalkyl of three through six carbon atoms, possess pharmacodynamic properties and are useful in the treatment of various cardiac disorders.
Inventor(s): Wooldridge; Kenneth Robert Harry (Brentwood, EN), Basil; Berkeley (Highwood, near Chelmsford, EN)
Assignee: May & Baker Limited (Dagenham, Essex, EN)
Application Number:05/277,607
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Delivery;

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Foreign Priority and PCT Information for Patent: 3,857,952

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom58516/67Dec 22, 1967
United Kingdom56513/68May 14, 1968
United Kingdom37103/68Aug 2, 1968

International Patent Family for Patent: 3,857,952

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria286262► subscribe
Austria286963► subscribe
Austria289826► 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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