Thiazolidinedione derivatives, production and use thereof
CA 2106967 C · Owner: Sohda, Takashi · Inventors: Colca, Jerry R.; Ikeda, Hitoshi; Greenfield, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a thiazolidinedione derivative of general formula (I) wherein X is -CH2- or -CO-, Q is CH3CO- CH3CH(OR)- or -CH2COOH, when X is -CH2wherein R is a hydrogen atom or an , acyl group or Q is CH3CH2-, when X, is -CO-, a pharmaceutically acceptable salt thereof or a pure stereoisomeric , form thereof. The thiazolidinedione derivative of general formula (I) has hypoglycemic and hypolipidemic activities.
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 April 6, 1992 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2014.
- 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.