Method of examining cancer cells and reagent therefor
CA 2517580 A1 · Owner: Takahashi, Hiroshi · Inventors: Mitsunaga, Makoto; Takahashi, Hiroshi; Hanada, Shuichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method whereby cancer cells can be conveniently and efficiently examined without resort to any expensive apparatus and a reagent therefor. In this cancer cell examination method, cancer cells expressing SF-25 antigen on the cell surface, which have been isolated from a living body are bonded to , magnetic beads by taking advantage of the antigen-antibody reaction between the cancer cells and anti-SF-25 antibody or an antigen-binding fragment thereof. Next, the magnetic beads are collected by magnetic attraction and then the cancer cells bonded on the magnetic beads are examined.
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 November 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 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.