Platinum (ii) complex and agent for treating malignant tumor
CA 2046313 C · Owner: Mutoh, Masato · Inventors: Mutoh, Masato; Hashimoto, Hideyuki; Hata, Go
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel-platinum (II) complex represented by the following formula (A):, (see fig. I), wherein R1 represents C1 - C5 lower hydrocarbon group R2 and R3 represents hydrogen atom or C1 - C3 lower hydrocarbon group, the configuration of 1,2-diaminocyclohexane being cis, trans-~- or trans-d-. Since the platinum (II) complex has a strong anti-tumor activity and its toxicity is low, it is useful as an agent for treating malignant tumor.
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 December 11, 1990 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.