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Serving leading biopharmaceutical companies globally:

Farmers Insurance
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Generated: November 19, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,210,081

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Summary for Patent: 5,210,081

Title: Alkali metal 8,9-dehydroestrone sulfate esters
Abstract:This invention presents alkali metal salts of 8,9-dehydroestrone, its sulfate ester, and stable compositions thereof, as well as processes for their production. The sulfate ester salts are useful in estrogen replacement therapy.
Inventor(s): Raveendranath; Panolil C. (Plattsburgh, NY), Wichtowski; John A. (Albans, VT)
Assignee: American Home Products Corporation (New York, NY)
Application Number:07/841,694
Patent Claim Types:
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International Patent Family for Patent: 5,210,081

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina042262► Subscribe
Argentina042345► Subscribe
Austria174342► Subscribe
Austria342272► Subscribe
Australia2007697► Subscribe
Australia3726093► Subscribe
Australia677181► Subscribe
Australia711571► Subscribe
Canada2089707► Subscribe
Germany69322497► 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:

Daiichi Sankyo
US Department of Justice
Fish and Richardson
Queensland Health
Express Scripts

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