Building panel and method
CA 2085945 C · Owner: Meyerson, Steven C. · Inventors: Meyerson, Steven C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A building panel with a central essentially rectangular insulating core of expanded polystyrene or equivalent including a skin laminated to the core on one side and by a composite skin applied to the other side derived from oriented strand board (OSB), or plywood and with a joint formation at each lateral edge, one joint formation including a male protrusion and an interlock with a groove, and the other joint formation including an extension of the composite skin a female recess, and an interlock with a groove a joiner disposed within the, core recess above the male protrusion such that overlapping portions of the composite skin on adjacent laterally disposed panels meet at the central …
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 21, 1992 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 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.