Sphingosine and n-methyl-sphingosine as inhibitor of cell growth
CA 2007507 C · Owner: Sugimoto, Mamoru · Inventors: Ogawa, Tomoya; Ito, Masayoshi; Toyokuni, Tatsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A medicament for inhibiting growth of human and animal cells comprising: (1) a cell growth inhibitory amount of a one or more growth inhibitors comprising synthetically prepared sphingosine, synthetically prepared N-methyl-sphingosine or pharmaceutically acceptable salts thereof; and (2) a pharmaceutically acceptable carrier, diluent or excipient. A method for inhibiting growth of human and animal cells in vivo comprising contacting said cells with a cell growth inhibitory amount of one or more growth inhibitors comprising synthetically prepared sphingosine synthetically prepared N-methyl-sphingosine or pharmaceutically acceptable salts thereof. A medicament for inhibiting growth of human …
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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 January 10, 1990 and granted May 19, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.