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Expired Canadian patentCanada

Underfloor covering heating system

CA 1296041 C · Owner: Roc-Crete Industries Ltd. · Inventors: Willner, Jonathan

CIPO record

Overview

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

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Abstract From the Canadian patent

The under floorcovering heating systems and pads for positioning below a floorcovering, each of the systems and pads comprising, (a) a heat conducting substrate; (b) solid conductor resistance heating wire positioned within the substrate in a serpentine manner for heating the substrate, the wire covered by at least one layer of material providing electrical insulation and strong mechanical strength jacketed, by an electrically conductive "self-healing" ("self-curing") strong layer of material for the purposes of grounding and protecting the system or pad;, and, (c) electrical connecting means for connecting the resistance wire to a source of electricity including means connected to the …

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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 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.
FiledNovember 15, 1988
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1296041 C
Classification (IPC)H05B3/26 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 15, 1988Patent grantedFeb 18, 1992Term endedFeb 18, 2009

Sources & verification

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