Immunoassay using insoluble carrier particles and reagent therefor
CA 2417128 A1 · Owner: Kyowa Medex Co. Ltd · Inventors: Shigenobu, Kayoko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reagent for immunity examination which contains insoluble carrier particles can be stored over long, and gives highly accurate and reliable found values; a method of immunity examination with the reagent; and a method of stabilizing the reagent. The method of immunity examination comprises conducting an antigen-antibody reaction with the aid of insoluble carrier particles in an aqueous medium containing both a buffer having the ability to buffer in a neutral to alkaline region (provided that the buffer is not a carbonate-based one) and a carbonic acid compound releasing a hydrogen carbonate ion. The reagent for immunity examination comprises a buffer having the ability to buffer …
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 July 27, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2023.
- 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.