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Expired Canadian patentCanada

Microelectrochemical sensor and sensor array

CA 1298873 C · Owner: Otagawa, Takaaki · Inventors: Otagawa, Takaaki; Madou, Marc J.

CIPO record

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

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Abstract From the Canadian patent

Abstract, Microelectrochemical Sensor and Sensor Array The invention relates to a microelectrochemical electrode structure comprising a monolithic substrate having a front surface and a back surface facing generally away from one another a first well, extending into the substrate from the surface towards the back surface and ending in a first well bottom and a first passage extending into the substrate from the back surface to the first well bottom. A first electrode is located wholly within the first well. A first conductor in the first passage serves for electrically communicating the first electrode to adjacent the back surface. A plurality of such electrode structures can be provided on …

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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

  • Granted April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 15, 1988
GrantedApril 14, 1992
Term endedApril 14, 2009
Patent numberCA 1298873 C
Classification (IPC)G01N27/30 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 15, 1988Patent grantedApril 14, 1992Term endedApril 14, 2009

Sources & verification

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