Nicotinic acid derivatives and pharmaceutical compositions comprising same
CA 2011144 C · Owner: Nisshin Flour Milling Co. Ltd. · Inventors: Sugai, Toshiji; Sakurai, Einosuke; Yamada, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with novel, compounds of the formula: wherein R1 is hydrogen or C1-C6 alkyl; Y is -CH2- -O-, , or , ; R2-NR2 is C1-C6 alkyl, C2-C6 alkenyl, C3-C6 cycloalkyl, phenyl which may be mono- or di-substituted on the phenyl ring with C1-C6 alkoxy benzyl or phenylethyl which may be mono- or di-substituted on the aromatic ring with C1-C6 alkoxy diphenylmethyl, carbo(C1-C2)alkoxy, or furanyl or pyrrolinidyl which is linked to the nitrogen atom via carbonyl or carbonylmethylene; m is 2 or 3; and n is 0 or 1, with the proviso that when Y is R1 is, hydrogen, m is 2 and n is 0, R2 is not methyl and, physiologically accpetable acid addition salts thereof. The compounds of …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 28, 1990 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.