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Serving leading biopharmaceutical companies globally:

Queensland Health
Express Scripts
Farmers Insurance
Fish and Richardson
Harvard Business School
Boehringer Ingelheim

Generated: November 21, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,018,929

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Summary for Patent: 4,018,929

Title: 3-Loweralkylcarbamylsulfonamido-4-phenylaminopyridine-N-oxides, derivatives thereof and pharmaceutical compositions containing same
Abstract:This invention relates to new derivatives of pyridine having anti-inflammatory and diuretic properties. The new derivatives of pyridine may be represented by the following general formula: ##STR1## in which X represents an amino, C.sub.1 -C.sub.4 -alkylamino, oxy or thio group, R.sub.1 represents a group of the formula R.sub.3 NHCA (II), wherein A represents oxygen or sulfur, and R.sub.3 represents a C.sub.1 -C.sub.4 -alkyl, alkenyl, cycloalkyl, phenyl (which may be substituted) or R.sub.4 CO (III) group, R.sub.4 representing a phenyl group (which may be substituted), R.sub.2 represents hydrogen or a C.sub.1 -C.sub.4 alkyl group and Z represents a C.sub.1 -C.sub.4 -alkyl, methylfuryl, pyridyl or phenyl group (which may be substituted). This invention relates also to the N-oxides of the compounds of formula I, as well as to the acid and base addition salts of said compounds.
Inventor(s): Delarge; Jacques E. (Dolembreux, BE), Lapiere; Charles L. (Tongeren, BE), Georges; Andre H. (Ottignies, BE)
Assignee: A. Christiaens Societe Anonyme (Brussels, BE)
Application Number:05/568,759
Patent Claim Types:
see list of patent claims
Compound; Composition;

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Foreign Priority and PCT Information for Patent: 4,018,929

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
16836/74Apr 17, 1974

International Patent Family for Patent: 4,018,929

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina208768► Subscribe
Argentina208769► Subscribe
Argentina208770► Subscribe
Argentina211097► Subscribe
AustriaA288275► Subscribe
Austria344170► Subscribe
AustriaA189777► Subscribe
Austria344174► Subscribe
AustriaA189977► Subscribe
Austria344175► 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:

Cantor Fitzgerald
Farmers Insurance
Johnson and Johnson

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