Method for assaying glycoconjugate and reagent thereof
CA 2133772 A1 · Owner: Eisai Co. Ltd. · Inventors: Yamada, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fundamental method for assaying a glycoconjugate such as a glycoprotein and a glycolipid, which falls within the category of the sandwich method and which comprises using as a first, reactant, a modified substance which has been suffered from modification at its sugar chain and has been lost its avidity for a sugar-chain-binding substance and, using a substance capable of binding to the sugar chain of a glycoconjugate as a second reactant. In the case of an assay of a rheumatoid factor which is one of glycoconjugates, a modified IgG and a lectin are used as the first reactant and the second reactant, respectively.
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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 6, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2016.
- 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.