Steel-wood system
CA 2192427 C · Owner: 9177-1097 Quebec Inc. · Inventors: Leblanc, Marcel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A web-reinforced wood joist defines a top edge surface, a bottom edge surface opposite to the top edge surface, a first lateral web surface and a, second lateral web surface opposite to the first lateral web surface. A longitudinal metal reinforcement is applied to at least one of the first and second lateral web surfaces. This metal reinforcement comprises at least one sheet metal strip formed with integral teeth distributed at predetermined intervals along the entire length thereof and driven into the wood to fixedly secure the metal reinforcement to the joist's wood. This web-reinforcing method is suitable to reinforce any type of elongated structural wood members to improve their …
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 December 9, 1996 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2018.
- 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.