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Serving leading biopharmaceutical companies globally:

Farmers Insurance
Boehringer Ingelheim
Cantor Fitzgerald
Argus Health

Generated: December 13, 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
Austria389696► Subscribe
Austria402069► Subscribe
Austria407956► Subscribe
AustriaA109189► Subscribe
AustriaA223188► Subscribe
AustriaA422281► Subscribe
Australia549119► Subscribe
Australia7595581► Subscribe
Belgium890574► Subscribe
Canada1202638► 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:

Express Scripts
Harvard Business School
Cantor Fitzgerald
Fish and Richardson
Boehringer Ingelheim

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