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Generated: December 16, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,904,650

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Summary for Patent: 4,904,650

Title: Substituted androsta-1,4-diene-3,17-diones
Abstract:The invention relates to 6-alkylidenadrosta-1,4-diene-3,17-dione derivatives, having the following general formula ##STR1## wherein each of R and R.sub.2, independently, is hydrogen or C.sub.1 -C.sub.6 alkyl and R.sub.1 is hydrogen, halogen or C.sub.1 -C.sub.6 alkyl, which are useful in therapy, in particular in the treatment of hormone-dependent cancers.
Inventor(s): Buzzetti; Franco (Monza, IT), Barbugian; Natale (Milan, IT), Lombardi; Paolo (Milan, IT), di Salle; Enrico (Milan, IT)
Assignee: Farmitalia Carlo Erba S.p.A. (Milan, IT)
Application Number:07/225,674
Patent Claim Types:
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Compound; Composition; Use;

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Foreign Priority and PCT Information for Patent: 4,904,650

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8517360Jul 09, 1985

International Patent Family for Patent: 4,904,650

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria395157► Subscribe
AustriaA181986► Subscribe
Australia578840► Subscribe
Australia5979986► Subscribe
Bosnia and Herzegovina97185► Subscribe
Belgium905067► Subscribe
Bulgaria61370► Subscribe
Brazil1100240► Subscribe
Canada1277656► Subscribe
Switzerland668599► 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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Serving leading biopharmaceutical companies globally:

US Department of Justice
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Express Scripts

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