Water-permeable, frost-resistant resurfacing composition
CA 2236499 A1 · Owner: Techno-Developpement Inc. · Inventors: Caron, Jeffrey Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-permeable, frost-resistant resurfacing composition comprises from 88 to 93 wt% of granules of relatively hard material having a particle size of -12 to +40 mesh and from 7 to 12 wt.% of an elastomeric binder the granules being bonded together while defining therebetween voids for receiving water. Expansion of the water contained in the voids upon freezing is compensated by a corresponding expansion of the binder without, rupture. The composition of the invention is particularly useful for resurfacing deteriorated concrete asphalt, brick, flagstone, tile and wood.
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 May 1, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 2020.
- 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.