Extruded polystyrene foam insulation with high thermal resistance
CA 2370863 A1 · Owner: Smith, Roy E. · Inventors: Deibel, Ronald D.; Smith, Roy E.; Bonekamp, Jeffrey E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Adhere a composite facer to at least one preferably both, primary surfaces of , a foam panel or board to impart a combination of enhanced strength and long term thermal resistance to an insulating foam board. The composite facer includes a foam contact layer that provides strength low elongation and abuse , resistance and a barrier layer with low oxygen permeability.
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 April 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 2022.
- 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.