Method for immunochemical determination of hapten
CA 2027035 A1 · Owner: Ogura, Minoru · Inventors: Ito, Michio; Kohno, Hideki; Ogura, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for immunochemical determination of a hapten in a sample is disclosed, in which, (A) a high-molecular compound to which the hapten is bound (reagent A), (B) insoluble carrier particles carrying thereon an antibody to the hapten (reagent B), and (C) magnetic substance-containing insoluble carrier particles carrying thereon an antibody to an antigenic determinant in the high-molecular compound and different from the hapten (reagent C), are used. These three reagents are dispersed in the sample then, a magnetic field is applied to separate from the reaction mixture unreacted reagent (C) and agglutinated particles formed from the reagent (B) and the reagent (C) through the reagent (A). …
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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 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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
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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.