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Chinese Patent Office

Generated: October 23, 2017

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Details for Patent: 4,138,581

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Summary for Patent: 4,138,581

Title: 3(Hydroxy or hydroxymethyl)-4(hydroxy)-.alpha.-(aminomethyl)benzyl alcohols
Abstract:Mono-, di- and tri-esters of 3-(hydroxy or hydroxymethyl)-4-hydroxy-.alpha.-(aminomethyl)benzyl alcohols, obtained by methods involving reduction of the corresponding mono- and di-ester ketones, are useful for producing sympathomimetic effects, such as bronchodilation, of long duration with low cardiovascular stimulating effect, in warm-blooded mammals.
Inventor(s): Minatoya; Hiroaki (East Greenbush, NY), Tullar; Benjamin F. (Laurel Park, NC), Conway; Walter D. (Amherst, NY)
Assignee: Sterling Drugs Inc. (New York, NY)
Application Number:05/654,700
Patent Claim Types:
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International Patent Family for Patent: 4,138,581

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria300762► Subscribe
Belgium748178► Subscribe
Canada923132► Subscribe
Switzerland522589► Subscribe
Germany2015573► Subscribe
Denmark131459► Subscribe
Spain378092► Subscribe
Finland54796► Subscribe
Finland773437► Subscribe
Finland61686► 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:

Johnson and Johnson
Harvard Business School
US Army
Daiichi Sankyo

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