Octadecyl-2-(n-methylpiperidino)-ethyl-phosphate and a process for its preparation
CA 2073146 C · Owner: Engel, Juergen · Inventors: Engel, Juergen; Hilgard, Peter; Stekar, Jurij
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Octadecyl-2-(N-methylpiperidino)-ethyl)-phosphate and a process for its preparation. This compound has an antitumour effect. Four different preparative processes for the compound are disclosed. Also disclosed is a new purification process. In combination the preparative processes and the purification process are simpler and more effective than prior art processes.
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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 July 3, 1992 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 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.