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Generated: December 11, 2017

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Details for Patent: 5,380,922

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Summary for Patent: 5,380,922

Title: Benzenedimethanol suitable for micronisation
Abstract:1-Hydroxy-2-naphthalene carboxylate (hydroxynaphthoate) salt of 4-hydroxy-a.sup.1 -[[[6-(4-phenylbutoxy)hexyl]-amino]methyl]-1,3-benzendimethanol in the form of spherical accretions of microcrystals, the spherical accretions being free-flowing, friable and micronisable and preferably having a mean particle size of from 70 to 300 mm and a mean surface area from 4 to 12 m.sup.2 g.sup.-1. The hydroxynaphthoate salt in the claimed form may be prepared by quenching a hot organic/aqueous organic solution containing the salt with a cold organic/aqueous organic solvent.
Inventor(s): Beach; Steven F. (Ware, GB3), Latham; David W. S. (Ware, GB3), Roberts; Tony G. (Ware, GB3), Sidgwick; Colin B. (Ware, GB3)
Assignee: Glaxo Group Limited (London, GB2)
Application Number:08/050,298
Patent Claim Types:
see list of patent claims
Compound; Process;

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Foreign Priority and PCT Information for Patent: 5,380,922

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9026005Nov 29, 1990

International Patent Family for Patent: 5,380,922

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
United Kingdom9026005► Subscribe
Cyprus2009► Subscribe
Czech Republic9301019► Subscribe
Czech Republic282996► Subscribe
Germany69122780► Subscribe
Denmark0639176► Subscribe
European Patent Office0571669► Subscribe
European Patent Office0639176► Subscribe
Spain2093812► Subscribe
Finland932422► 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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