Process for the determination of antibodies which are class-specific for an antigen and a reagent for carrying out the process
CA 2001253 C · Owner: Roche Diagnostics Gmbh · Inventors: Schmitt, Urban
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for the determination in body fluids of antibodies of a definite immunoglobulin class which are directed against an antigen A according to the immunoassay principle by incubation of the sample solution with at least two receptors R1 and R2 which R1 is immobilizable and binds with the antibody to be determined and R2 is labelled and binds either with the antibody to be determined or with the antigen A separation, of the solid phase from the liquid phase and measurement of the label in one of the two phases, wherein the immunological reaction is carried out in homogeneous phase and the sample solution is incubated simultaneously with receptor R1 and an …
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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 October 23, 1989 and granted May 16, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2011.
- 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.