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Details for Patent: 4,324,779

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Summary for Patent: 4,324,779

Title: Method for treating hypertonia with N-(2-furfuryl)-4-chloro-5-sulfamoyl-anthranilic acid and preparations thereof
Abstract:A method for treating hypertonia with a preparation of N-(2-furfuryl)-4-chloro-5-sulfamoyl-anthranilic acid having a slightly retarded release, wherein the release of the active substance in vitro, measured in the flow through-cell to Dibbern, is not more than 5% after 1 hour in a buffer solution of pH 1.5 and about 10 to at most 25% of the active substance content after a two-hour treatment in a buffer solution of pH 5.5.
Inventor(s): Dahlhausen; Gebhard (Kronberg, DE), Dibbern; Hans-Werner (Kelkheim, DE), Fulberth (Kelkheim, DE), Ross; Gerhard (Kriftel, DE)
Assignee: Hoechst Aktiengesellschaft (Frankfurt am Main, DE)
Application Number:06/077,181
Patent Claim Types:
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Compound; Dosage form; Formulation;

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Foreign Priority and PCT Information for Patent: 4,324,779

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany2343218Aug 28, 1973

International Patent Family for Patent: 4,324,779

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria344914► subscribe
AustriaA694274► subscribe
Australia7272874► 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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