Heated concrete floor slab
CA 2118726 A1 · Owner: Schilger, Herbert K. · Inventors: Schilger, Herbert K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A simple to construct heated floor slab is described. This construction comprises an undulated or ribbed sheet of expanded, rigid foam insulation, a sheet of expanded metal lath placed on top of the rigid insulation and a concrete slab formed on top of the expanded metal lath. This provides a floor construction having a plurality of air passages formed between low regions of the rigid insulation and the concrete slab. Heated air can then be passed through these air passages to efficiently heat the concrete slab.
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 March 10, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2016.
- 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.