Floor construction method
CA 2063298 C · Owner: Couture, Raymond · Inventors: Couture, Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A joint for headed panels to be used as flooring support in a residential building. the joint consists of a notch or cavity on the edge of the headed panels a polyester resin inserted in the joint cavity and a fibreglass pin imbedded in the resin. Under the effect of a catalyst the resin hardens, welding the fibreglass pin to the headed panels to create a prestressed structure. The pin may be cylindrical rectangular or have a U-shaped cross section. The joint could also allow the headed panels to be used to support the treads and risers of a staircase.
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 18, 1992 and granted November 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 2014.
- 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.