Benzobthiophen-3-yl-piperazines, a process for their preparation and their use as medicaments
CA 2096515 C · Owner: Hrib, Nicholas J. · Inventors: Jurcak, John G.; Hrib, Nicholas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Benzo(b)thiophen-3-yl piperazines, a process for their preparation and their use, as medicaments, The present invention relates to compounds having formula I depicted below where, m is an integer of 1 or 2;, each X is indepentently hydrogen halogen, loweralkoxy or trifluormethyl; n is an integer of 2 or 3;, p is an integer of 0 1 or 2;, q is an integer of 1 or 2; and each R is indepentently hydrogen, loweralkyl loweralkoxy, hydroxy, -NH-Alkyl, term "Alkyl" in each occurrence signifying an alkyl group of 1 to 6 carbon atoms;, or a pharmaceutically acceptable acid addition salt thereof and to a process for, their preparation.
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 May 18, 1993 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2015.
- 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.