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Expired Canadian patentCanada

A substrate and a method for determining and/or monitoring electrophysiological properties of ion channels

CA 2385482 C · Owner: Christophersen, Palle · Inventors: Hansen, Ole; Telleman, Pieter; Christophersen, Palle

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Abstract From the Canadian patent

The present invention relates to a substrate and a method for obtaining an electrophysiological measuring configuration in which a cell forms a high resistive seal (giga-seal) around a measuring electrode making it suitable for determining and monitoring a current flow through the cell membrane. The substrate is typically part of an apparatus for studying electrical events in cell membranes, such as an apparatus for carrying out patch clamp techniques utilised to study ion transfer channels in biological membranes. The substrate has a plurality or an array of measuring sites with integrated measuring and reference electrodes formed by wafer processing technology. The electrodes are …

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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 2, 2000 and granted January 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 2, 2000
GrantedJanuary 18, 2011
Term endedOctober 2, 2020
Patent numberCA 2385482 C
Classification (IPC)G01N33/48 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedOct 2, 2000Patent grantedJan 18, 2011Term endedOct 2, 2020

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