Heat cell for a roof
CA 2214240 A1 · Owner: Tourangeau, Donald R. · Inventors: Tourangeau, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat cell is described including a lower panel which is placed on a roof and which is configured to form an open-side conduit. A heat-reflective layer is disposed adjacent the lower panel to direct heat upwardly and a heat-generating mechanism is, disposed in the conduit to provide heat to the cell. The heat-generating mechanism is sized to fit tightly inside the conduit. An upper panel snaps-on and attaches to the lower panel and encloses the heat-reflective layer and heat-generating mechanism.
Read the whole patent
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 August 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.