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Details for Patent: 5,569,652

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Summary for Patent: 5,569,652

Title: Dihydrospirorenone as an antiandrogen
Abstract:Dihydrospirorenone, ##STR1## preferably together with an estrogen, can be used for the production of a pharmaceutical agent suitable for treatment of hormonal irregularities during premenopause (menstruation stabilization), for hormonal substitution therapy during menopause, for treatment of androgen-induced disorders and/or for contraception.
Inventor(s): Beier; Sybille (Berlin, DE), Elger; Walter (Berlin, DE), Nishino; Yukishige (Berlin, DE), Wiechert; Rudolf (Berlin, DE)
Assignee: Schering Aktiengesellschaft (Berlin, DE)
Application Number:08/162,387
Patent Claim Types:
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Patent PDF download available with subscription

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Foreign Priority and PCT Information for Patent: 5,569,652

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany39 16 112.9May 16, 1989

International Patent Family for Patent: 5,569,652

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria154881<disabled in preview>
Australia5509490<disabled in preview>
Australia642876<disabled in preview>
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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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