Structural wooden joist
CA 2180715 C · Owner: Romaro 2000 Limitee · Inventors: Labrie, Mario; Veilleux, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The structural wooden joist described comprises a lower chord an upper chord spaced from the lower chord and an openwork web structure joining the chords. The web structure includes between opposite ends, thereof, a series of horizontally spaced trapezoidal laminated panels defining a series of triangular spacings therebetween; each panel has opposite short and long sides adhesively joined to the lower and upper chords respectively and each panel is formed of short obliquely extending boards adhesively secured edgewise to one another.
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 July 8, 1996 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 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.