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Expired Canadian patentCanada

Diagnostic system for combustion controller

CA 1332964 C · Owner: Hall, George R. Ii · Inventors: Hall, George R. Ii; Fry, John J.; Smith, Robert A.

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

A combustion control system includes a sensor assembly and a process controller, the sensor assembly including sensors for providing output signals indicative of process variables, the process controller responding to the output signals to maintain a desired operation of the process. The process controller continuously monitors parameters of the sensors and provides alarms whenever any of these parameters deviate from setpoint values, the process controller automatically prioritizing these alarms to provide a display of only the most relevant alarms. A housing enclosing the processor controller provides RFI/EMI shielding of the process controller including the attenuation and absorption of …

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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 November 8, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 8, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 1988
GrantedNovember 8, 1994
Term endedNovember 8, 2011
Patent numberCA 1332964 C
Classification (IPC)F23N5/24 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 10, 1988Patent grantedNov 8, 1994Term endedNov 8, 2011

Sources & verification

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