Patent Yard Sign in
Expired Canadian patentCanada

Immunoassay device with immuno-reference electrode

CA 2538826 C · Owner: Miller, Cary James · Inventors: Campbell, John Lewis Emerson; Miller, Cary James

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

An electrochemical immunosensor system with reduced interference comprising: , a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody a target analyte and , a labeled antibody wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor and a , second immunosensor that acts as an immuno-reference sensor and generates a signal that is the same as or predictably related to the degree of nonspecific binding which occurs in the region of the first immunosensor and has , an immunocomplex between an immobilized antibody and an endogenous or exogenous …

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 September 9, 2004 and granted February 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 9, 2004
GrantedFebruary 24, 2015
Term endedSeptember 9, 2024
Patent numberCA 2538826 C
Classification (IPC)G01N27/00 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 9, 2004Patent grantedFeb 24, 2015Term endedSep 9, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.