Carboxamide derivatives
CA 2017692 C · Owner: Shinomiya, Kayoko · Inventors: Uesaka, Eiji; Shoji, Yasuo; Tsuda, Yoshihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are carboxamide derivatives represented by the formula (1), (see fig. I), wherein R is a lower alkyl group; and X is a halogen atom capable of lowering lipids in the blood with less side-effect i.e. low toxicity, by eliminating drawbacks shown in known drugs for treating and curing hyperlipidemia.
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 29, 1990 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.
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.