Roofing tile
CA 2268606 A1 · Owner: Foord, Kenneth G. · Inventors: Foord, Kenneth G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A durable roofing tile is disclosed wherein the tile is made substantially of crumb rubber, and having latex and MDI urethane. It is preferable that at least 50% of the tile consist of, crumb rubber and <15% be MDI urethane and latex. This tile is able to withstand rot. infestation, and premature weathering due to severe climate changes. Furthermore this, tile is somewhat breathable and water-resistant.
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 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2021.
- 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.