Composition, method and kit for potentiating antitumor activity and for curing tumor
CA 2087540 C · Owner: Shirasaka, Tetsuhiko · Inventors: Shirasaka, Tetsuhiko; Ohshimo, Hideyuki; Shimamoto, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for potentiating the antitumor activity of tegafur and reducing the adverse effects comprising a, compound represented by general formula (I) wherein X represents halogen or cyano and oxonic acid or a pharmaceutically acceptable salt thereof. A method and kit practicing the method are also disclosed. A composition for curing tumors is also disclosed comprising tegafur a, compound represented by formula (I) and oxonic acid or a pharmaceutically acceptable salt thereof as well as a method and kit therefor.
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 22, 1992 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.