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Expired Canadian patentCanada

Smokeless pyrolysis furnace with single thermocouple, and ramp and soak temperature control system

CA 1284580 C · Owner: Koptis, Robert A. · Inventors: Koptis, Robert A.; Heran, Robert F.

CIPO record

Overview

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Abstract From the Canadian patent

A batch-type pyrolysis furnace fired by a main heat source such as a gas burner or an electric heating coil in combination with an afterburner to burn volatiles generated in the furnace's main chamber, is operated to incinerate high-polymer loads smokelessy, yet is effectively safeguarded from explosions. A single thermocouple (zone TC) senses the instantaneous temperature in a critical sensitive zone (CSZ) of the furnace and in cooperation with a programmable controller (PC), maintains a preselected ramp and soak temperature profile over the entire burn cycle. The CSZ has been found to be within about 1' (foot) from the upper edge of the throat and not lower, than about 6" (inches) from …

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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 June 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 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 10, 1988
GrantedJune 4, 1991
Term endedJune 4, 2008
Patent numberCA 1284580 C
Classification (IPC)F23N5/02 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 10, 1988Patent grantedJune 4, 1991Term endedJune 4, 2008

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