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Serving leading biopharmaceutical companies globally:

Fish and Richardson
Farmers Insurance

Generated: October 21, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,521,431

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Summary for Patent: 4,521,431

Title: Aminoalkyl furan derivative
Abstract:A novel crystal form of ranitidine (N-[2-[[[5-(dimethylamino)methyl]-2-furanyl]methyl]thio]ethyl-N'-methyl-2- nitro-1,1-ethenediamine) hydrochloride, designated Form 2, and having favorable filtration and drying characteristics, is characterized by its infra-red spectrum and/or by its x-ray powder diffraction patterns.
Inventor(s): Crookes; Derek L. (Hertford, GB2)
Assignee: Glaxo Group Limited (London, GB2)
Application Number:06/406,710
Patent Claim Types:
see list of patent claims
Compound; Composition; Dosage form; Use;

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Foreign Priority and PCT Information for Patent: 4,521,431

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8031634Oct 01, 1980

International Patent Family for Patent: 4,521,431

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
South Korea830007070► Subscribe
South Korea870001431► Subscribe
Luxembourg83661► Subscribe
Malaysia8500747► Subscribe
Kenya3549► Subscribe
JapanH0443070► Subscribe
JapanS5791983► Subscribe
Italy8149407► Subscribe
Italy1143237► Subscribe
Israel63968► 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:

Queensland Health

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