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Expired Canadian patentCanada

Solar air heating system

CA 2559641 C · Owner: Matrix Energy Inc. · Inventors: Wilkinson, Brian

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

A solar air heating system for a building having a directly sunlit facade. The system has a perforated panel covering the wall. Frame members fasten the panel to the wall to space the panel a short distance away from the wall and to form an air cavities between the wall and panel. There is an air collecting space at the bottom of the cavity adjacent the wall. An air inlet in the wall connects the air collecting space to the interior of the building. A fan in the building draws outside air into the cavity through the perforations in the panel from the cavity into the air collecting space and from the air collecting space into the building through the air inlet.

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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 September 13, 2006 and granted April 15, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 13, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 13, 2006
GrantedApril 15, 2014
Term endedSeptember 13, 2026
Patent numberCA 2559641 C
Classification (IPC)E04C2/52 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedSep 13, 2006Patent grantedApril 15, 2014Term endedSep 13, 2026

Sources & verification

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