Liquid stable composition of oxazaphosphorine with mesna
CA 2497898 C · Owner: Praveen, Kumar Subbappa · Inventors: Praveen, Kumar Subbappa; Daftary, Gautam Vinod; Rivankar, Sangeeta Hanurmesh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low toxicity, stable oxazaphosphorine containing compositions with mesna for parenteral administration has been described. The process essentially requires addition of an oxazaphosphorine antineoplastic to the aqueous solution of an etherified b-cyclodextrin followed by addition of mesna as such or as an aqueous solution containing optionally an etherified b-cyclodextrin. , Preferably the oxazaphosphorine antineoplastic is Ifosfamide and the etherified b-cyclodextrin is 2-hydroxypropyl-b-cyclodextrin.
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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 September 4, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2025.
- 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.