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Expired Canadian patentCanada

Heated solid electrolyte oxygen sensor having unique heater element

CA 1286360 C · Owner: Ker, Eric L. · Inventors: Ker, Eric L.; Vasilow, Theodore R.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure A readily manufacturable heated solid, electrolyte oxygen sensor. A heater subassembly readily adaptable to unheated oxygen sensor technology provides a greater reference oxygen gas source to the reference electrode of the solid electrolyte body in, addition to being positioned and rigidly secured within the oxygen sensing device.

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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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 16, 1989
GrantedJuly 16, 1991
Term endedJuly 16, 2008
Patent numberCA 1286360 C
Classification (IPC)G01N27/41 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 16, 1989Patent grantedJuly 16, 1991Term endedJuly 16, 2008

Sources & verification

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