Solid phase reagent and assay method for antibody using the same
CA 2107557 C · Owner: Koike, Takao · Inventors: Koike, Takao; Matsuura, Eiji; Igarashi, Yoshiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
By using a solid phase reagent comprising a carrier having the surface onto which functional groups containing a negative charge or a lone pair and/or free radicals containing a negative charge or a lone pair have been introduced and having .beta.2-glycoprotein I coated on the surface, antibodies specific to antiphospholipid syndrome can be specifically assayed. Antibodies specific to antiphospholipid syndrome can be assayed differentially from antibodies specific to infectious diseases by using the solid phase reagent described above or a further modified solid phase reagent.
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 February 5, 1993 and granted July 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2015.
- 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.