Compositions containing green porphyrins to destroy malignant cells in mononuclear cell populations
CA 2075895 C · Owner: Levy, Julia G. · Inventors: Levy, Julia G.; Jamieson, Catriona
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method to prepare bone marrow or other hemopoietic cells free of malignant cells for autologous transplants is described The mononuclear cells from the marrow are treated with a green porphyrin (Gp) to effect the uptake of said Gp by malignant cells, selectively, and then irradiated with a wavelength of tight absorbed by said Gp to effect the destruction of the malignant cells. The purged marrow cells can then be used for autologous transplantation.
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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 February 20, 1991 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2013.
- 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.